Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd293d67ad4e30d…

MALICIOUS

PDF

66.2 KB Created: 2020-12-31 02:15:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7dfd96974396f15a348592ded4ada833 SHA-1: bb280bb77f6fb8a738f7c9dc865c6ae69f77b019 SHA-256: fbd293d67ad4e30daf5bbb86d8202dfa40f7fde3995921e8d8836515c681f274
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'slot machine finder illinois'. The presence of a malicious redirector and a link farm indicates an attempt to direct users to potentially harmful content or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/123?utm_term=slot+machine+finder+illinois In PDF document text
    • https://jubuxazule.weebly.com/uploads/1/3/4/5/134585976/wimaxowinude-zasexuluxa.pdfIn PDF document text
    • https://dasezakam.weebly.com/uploads/1/3/4/8/134883145/7692133.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392451/normal_5fc3cb2b2f1df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380695/normal_5f906d222e44b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470703/normal_5fe6b33ed0262.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422658/normal_5f9cc7319980d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381532/normal_5f936b44ea6fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f9c0bba90e14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450418/normal_5fbc31642d918.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5fd8d4f9721e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393485/normal_5f9f58451a039.pdfIn PDF document text
    • https://tazeviguso.weebly.com/uploads/1/3/4/3/134339516/5043669.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/wunojipu/judy_country_kitchen_in_washington.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6961be53-30c4-49e0-bd32-14ee80f6ddc5/degiwitaroladi.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/leybold_gmbh_annual_report.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_off0000c7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A9 5364 bytes
SHA-256: c259b7ca2259843f30c2138406f6374740137ab108bb03933b6a7cf727a9637e
font_01_sfnt_off0000d9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B7 10148 bytes
SHA-256: 078d49e9f1f4263eaf1b1b623da571c40f27aeb012adccaced184101e304b57d

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