Malicious PDF — malware analysis report

Static analysis result for SHA-256 365df2024c18ebc5…

MALICIOUS

PDF

85.0 KB Created: 2021-09-14 06:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 05e4cd3f98e61a35afe650b26524417e SHA-1: 65261abecfc9444e1013a682aca5ace4faf02e5f SHA-256: 365df2024c18ebc5ec759cfadf228c94d40fa4264d3adc645ad768f63f1f6633
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple disposable domains, a common tactic for distributing malware. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a method used to bypass gateway security. ClamAV detection and ML classification strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=how+to+remove+pin+lock+from+android
    • http://www.bsa.by/ckfinder/userfiles/files/vedavuxo.pdf
    • http://salespate.com/userfiles/file/56564004280.pdf
    • https://feldmann-spedition.de/pics/userfiles/file/zigegavugokaxuxubidijum.pdf
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136044394ab3---jadosumasevib.pdf
    • http://halmar.info/userfiles/file/zutuvuxovosex.pdf
    • http://cck-brno.cz/ckfinder/userfiles/files/lajupusevizitesafaxale.pdf
    • http://ks4073.com/file_media/file_image/file/poxudujirupuroxosejozuse.pdf
    • https://aadharshilaschool.org/userfiles/file/25693493516.pdf
    • http://abwcockeysville.com/uploads/files/kasazofabisovev.pdf
    • http://opusincertum.it/userfiles/files/luxobolimepufozorebujag.pdf
    • http://fence-alarm.com/userfiles/files/jefebamigitadobusaponis.pdf
    • http://runbo.net/upfiles/files/16309187721095.pdf
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f7d1b37d17---57934377691.pdf
    • http://fonnepal.org/userfiles/file/61686500004.pdf
    • http://pscworld.eu/ckfinder/userfiles/files/85142277524.pdf
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613c3f6645721---12022922575.pdf
    • https://briljant-maleri.se/UserFiles/files/xoxututijixewiwuk.pdf
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613174fb55887---lexudedikoxaginizukef.pdf
    • http://vishwkarmaenterprises.com/webroot/img/userfiles/files/sunavumutulenerujopo.pdf
    • http://www.alcera.ca/userfiles/file/tomibuj.pdf
    • http://infracsap.hu/files/file/24848400265.pdf
    • http://elitakhealing.com/ckfinder/userfiles/files/42497947523.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e07a.bin
a84cb8df5a9f6545c6c3ba5835adf767e741eb3cd40d8b288e76632cf7cf1579		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE07A 10848 bytes
font_01_sfnt_off0000f97f.bin
2da0511cccecc74b52d236cff66f1118bce562d6ee9e9df91108c04d929e2b79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF97F 20484 bytes
font_02_sfnt_off00012ebb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EBB 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.