Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69d225ccfd1b1e1…

MALICIOUS

PDF

82.7 KB Created: 2021-07-13 15:51:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 7f503a10d2a7f440a3bc2b6aa2e59bf4 SHA-1: 1f732eabd487f4403a560ae7c333f476da9c81f9 SHA-256: e69d225ccfd1b1e11918695b38347da54597f33053b0e6b6b928d8c5757f153d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised CMS platforms. The presence of embedded URLs and the nature of the link farm suggest an attempt to redirect users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://allytemp.ru/uplcv?utm_term=o+negative+universal+donor PDF link annotation
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9a9beb8e6---moxasavizadinuxa.pdfIn PDF document text
    • https://cafesca.org/ckfinder/userfiles/files/92219347999.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b3de303fa64---bekunawezezomofox.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ogqsvnj1svd0cuiibo3u82em33/desiberivoz.pdfIn PDF document text
    • https://skvely-kup.cz/files/file/89998431639.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1a9d206c4---jujavanevuvubazosisonel.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160891e02e5518---sizaxurebowefuzebosas.pdfIn PDF document text
    • https://thefencedocumentary.com/adminfiles/file/murixapunodopaz.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/71c4a232d55387f4f04552cd6480359d/xebewutoji.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b05096af42b---gidivetetomaneze.pdfIn PDF document text
    • https://echipamente-scule.ro/userfiles/file/91194215006.pdfIn PDF document text
    • http://budka39.ru/files/9214558603.pdfIn PDF document text
    • https://kogan-photo.ru/wp-content/plugins/super-forms/uploads/php/files/730c596464636bfdabf29100fde411f7/nokawelibide.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609cafa9b0cd7---44648517046.pdfIn PDF document text
    • https://arzhosting.com/calisma2/files/uploads/71043851705.pdfIn PDF document text
    • http://drironcat.com/images/file/1380802243.pdfIn PDF document text
    • http://exclusivelimoservice.com/ckfinder/userfiles/files/63743092011.pdfIn PDF document text
    • http://af.ssla.ru/images/fornews/files/kiradotefejava.pdfIn PDF document text
    • http://abwcrainhwy.com/uploads/files/74275313596.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e5c75e9d5cd---9230088695.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/eqqalutcvbo6er5m7ejggudpc3/35327372582.pdfIn PDF document text
    • http://pizzeriagiganti.ro/imagini_ws/48327517807.pdfIn PDF document text
    • https://jokerprod.net/userfiles/file/57233270697.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_off0000e0b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C7 10616 bytes
SHA-256: 9e94f1cc9e307a2f5dc8a7afe3a19723153aabcd5986e5b61bfc19eaccca19b1
font_02_sfnt_off00011106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11106 16620 bytes
SHA-256: 41e6356f8457e6e93bb3023646e17c51964fa3e6ec525ccf4663923c7e9501fa

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