Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e82af2c274ffd9…

MALICIOUS

PDF

71.1 KB Created: 2020-11-25 14:53:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 27eb31c1f881e0af8732966de94d8238 SHA-1: d76305cff3288002067c37d53dda6ebb4da46276 SHA-256: e8e82af2c274ffd9fce97f8bb52e3e2997e0fb4e3854dcb1aceb621ada7088d5
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links, many pointing to disposable hosting and redirector infrastructure, indicating a phishing or SEO manipulation attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://gettraff.ru/strik?utm_term=ddr+german+shepherd+breeders
    • https://ralikinu.weebly.com/uploads/1/3/4/8/134883141/sutisajawigesadu.pdf
    • https://setinedib.weebly.com/uploads/1/3/4/6/134684411/lijufifekafi.pdf
    • https://fopimakalegej.weebly.com/uploads/1/3/0/7/130738542/2dbc6cacf7e5ed7.pdf
    • https://lavigepes.weebly.com/uploads/1/3/4/4/134437347/600332.pdf
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/3837160.pdf
    • https://gajokemijibefe.weebly.com/uploads/1/3/4/4/134467094/jarimuj.pdf
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/muxotevebuvogo.pdf
    • https://rumeravovavupol.weebly.com/uploads/1/3/4/6/134619367/vusesegoz_gududibukemudom_pejikivitumivu_xuvokinu.pdf
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/kasodopizafazakoxuk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gowebabuxogiro/3d_bovine_anatomy_apk.pdf
    • https://uploads.strikinglycdn.com/files/bf9cef28-d8ef-4503-848f-79f0b782b84e/durolelapo.pdf
    • https://uploads.strikinglycdn.com/files/c8b74244-88e8-4a60-b8d4-b0449191107e/84937873087.pdf
    • https://s3.amazonaws.com/wemupajese/70144432508.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d96f.bin
966fa00da833d8d7149a07c0eaa5ff9a831eb29a84eeff22eb9a251fd25cbd4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD96F 5480 bytes
font_01_sfnt_off0000ebe3.bin
02abcd66f86d9b96fef5aeb553c4b0aa89c6275f123c8277773a8577f692c0ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE3 10028 bytes

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