Malicious PDF — malware analysis report

Static analysis result for SHA-256 692d29a6952c237f…

MALICIOUS

PDF

86.1 KB Created: 2021-08-19 08:44:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7adf02dea56a0009f7c8b367aa9635b9 SHA-1: 88542be95efd2ebef6c1eaf60866da1b5efd67c7 SHA-256: 692d29a6952c237f38e4415237b678edad7216c6d1cf46b80954de94ba3035f2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs are designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://laborke.ru/uplcv?utm_term=is+app+market+safe PDF link annotation
    • http://ticketsperiodico.com/galeria/files/penekekenitar.pdfIn PDF document text
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/opojp9mnclt8a1g4t9lc4rj1gk/wubakobi.pdfIn PDF document text
    • https://air-separation-supplier.com/d/files/xedipojanawizefuxuf.pdfIn PDF document text
    • http://gamboeng.com/assets/ckfinder/userfiles/files/51871339279.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160964a582f65d---97606986015.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/d858a3061b9305c88ff2756493708ffe/bamumikamaziroguk.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c81535b00---97286992248.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607056ed23a9b---tagaxezubobuvalivuzozefim.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/bfedd261d18a762f68ce433cbea2d6f0/12457917744.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c95bfc89c6---lazomoxatofunuwi.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607a611926628---gapugunepugowififegeferu.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bcfdeb3fceb---kebumibixiga.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871d158da8d---getikojedaruzezolekoteli.pdfIn PDF document text
    • https://n-v-v.dk/userfiles/file/jutopozibukajobapi.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160747a73a826f---remurogefimogirikevolon.pdfIn PDF document text
    • http://stellamaris.cz/userfiles/gamilipofisesazew.pdfIn PDF document text
    • http://citra.cl/userfiles/file/fiwixuwigorufikojik.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abfd78685c1---41799050787.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b786cb8c405---pedazaraxez.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/zefazeguliwugefusimanatot.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/6e85391b40fd5efa7d8a301e1156b3b5/tegutetolisavowefu.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088cff4029cf---22117081782.pdfIn PDF document text
    • http://gadkowski.pl/repository/filemanager/file/87077952501.pdfIn PDF document text
    • https://rosedreamholidayhomes.com/ckfinder/userfiles/files/vuzale.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/e49b0c75c296aac23ec4400d57c56728/rijefinujafetekepitison.pdfIn PDF document text
    • http://lawngo.net/fckfiles/rorid.pdfIn PDF document text
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/da6c850e65417ff961dbd98604d95c55/28193072563.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC86 18040 bytes
SHA-256: 03dc026dabd886d31beb2f92020eb9991dec161e38ee8a953ff864eaf1d576fd
font_01_sfnt_off00011bc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BC6 10200 bytes
SHA-256: 86af3bb5d5387f66405b49a1c9c14f571aba004a84ab9f6c7297af5c292839fb
font_02_sfnt_off000132b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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