Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c95d72d8b10ea32…

MALICIOUS

PDF

73.8 KB Created: 2020-12-31 09:33:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 13e8ebdb8646150f21cbab0685e0dfea SHA-1: 7c9507b4649fdb3061298dc6d9140312a7628d5a SHA-256: 9c95d72d8b10ea32027f2a90e9a69401daff4ab704e8782d8fc6074244d1fe04
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or link farm attack. It contains numerous external links, including one to 'trafficel.ru', suggesting an attempt to redirect users to potentially harmful websites. The document body, though heavily obfuscated, appears to contain keywords related to 'occupational performance issues dementia', likely a lure to attract victims.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafficel.ru/123?utm_term=occupational+performance+issues+dementia PDF link annotation
    • https://cdn.sqhk.co/wuvupalib/agcBgeh/sharpened_pencil_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/bibunifez/ggjFxib/snake_eyes_piercing.pdfIn PDF document text
    • https://xubupibef.weebly.com/uploads/1/3/4/7/134742940/teler-semapezagonu-dufudexolutupu-weranobewosexe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406809/normal_5fb47b5d308bb.pdfIn PDF document text
    • https://cdn.sqhk.co/sewetotab/jjjeibY/virgin_pulse_sign_in.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490127/normal_5fe54ff7bcb4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385613/normal_5faad588ab0a2.pdfIn PDF document text
    • https://cdn.sqhk.co/nezafomura/Dhgx0ZE/15343975892.pdfIn PDF document text
    • https://cdn.sqhk.co/veleviziwew/MACihjc/fivajufubetamuwovolok.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/iUidiDk/15492736767.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/71fce726-4ed3-467c-8b40-773018825ba7/king_lear_monologue_cordelia.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/22950903273.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/xirikuvejonanewu.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC126 5212 bytes
SHA-256: 0dbf984fb52a35f690cc3a5d2d56c9c4168d12823ec9bc10dcf691b01235955b
font_01_sfnt_off0000d2c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C0 10452 bytes
SHA-256: 7e3c4dfcfee73fc20cf3f78a374ea57339dcb5f74120e78af8cec070dd16830d
font_02_sfnt_off0000f6c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C0 16192 bytes
SHA-256: 32030e49d789857223d6ba8002ca8ea391e523491ca38931da461be8655d8b12
font_03_sfnt_off00010be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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