Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c4d003ea5aa61b…

MALICIOUS

PDF

78.4 KB Created: 2020-12-16 18:13:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7f92251cd696b24bc9e72adf29406e72 SHA-1: ecf60fe7c2120efcc17e3eb145c908a643eb5e0d SHA-256: 68c4d003ea5aa61b073d21e9cbb81f6602792eabae7642ca73bb6711b941da10
214 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm infrastructure designed to redirect users to malicious sites. One such link is associated with known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to a business plan, likely to entice users to click the malicious links. The presence of multiple PDF links and a link to a redirector indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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 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.
  • 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.
  • 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://traffine.ru/123?utm_term=agricultural+co-operative+business+plan In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404755/normal_5f953ae6edf0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427295/normal_5fa221644ab48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5f89bec4c02a7.pdfIn PDF document text
    • https://belafawejogawol.weebly.com/uploads/1/3/4/5/134583754/2740116.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490722/normal_5faa626c4ddcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425506/normal_5f99598664d6d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6dab778-804a-413b-bed7-937e8062751f/michael_row_the_boat_ashore_lyrics_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0350f967-10ad-452b-91ab-f7b7ddde4b66/xekutuzebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f937d15-3bca-4843-a009-ef7958d80333/halter_top_swimsuit_target.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd08572-d883-43c2-8a5d-57633f2cdd1a/sarowodidilimitopujuroluz.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_off0000f761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF761 5324 bytes
SHA-256: 9f4f517246a3f2cc0b9b021347a0492d4f83b744e86237ed8a2b16a82b190bd3
font_01_sfnt_off00010996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10996 10296 bytes
SHA-256: de19880da85e986ee5c93a1a8705d56b508356afa9f9c07e5c96c6f1fd8f9c66

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