Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4e3ae2a301d9e88…

MALICIOUS

PDF

67.8 KB Created: 2020-12-27 12:15:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 97673a062f369ff2b6c97af1bb1654e8 SHA-1: d6f5088eae5525ba4863033a0ad686847542c803 SHA-256: c4e3ae2a301d9e888ee1cc09c3dfa00ea41bf8641d9e24d9243df0dd3e10ba76
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristic firings suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://ggtraff.ru/aws?utm_term=picsart+para+pc+apk In PDF document text
    • https://cdn.sqhk.co/doxowite/6JABjd1/production_sound_mixer_assistant_job_description.pdfIn PDF document text
    • https://cdn.sqhk.co/rawegili/Agcaiat/93343684972.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxawexa/bShiK0X/daily_deals_food_outlet_allendale_mi.pdfIn PDF document text
    • https://cdn.sqhk.co/bojojiweg/9jfjhTX/bounce_original_scent.pdfIn PDF document text
    • https://cdn.sqhk.co/zotevokep/jebidjc/pusuxutuje.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/gi4ym73/rubuxinamomakuta.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/a1N8gd0/98293493945.pdfIn PDF document text
    • https://cdn.sqhk.co/bojojiweg/UgeMhcJ/rapid_racer_car.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xefejevife/14223523466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91143adc-d3b7-4a5d-a067-573a19068ca6/52669357256.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/76226867865.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/31440626812.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD6 4960 bytes
SHA-256: ed3790a953362bd4d8002232a5f5a9708ceec2bc268e0eaa6234c8c84b2a5bfc
font_01_sfnt_off0000ddca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCA 11284 bytes
SHA-256: 9c7e3b56feaa809bcc4f30de133456a4e37ae93366e41747e316843cb64b2a27

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