Malicious PDF — malware analysis report

Static analysis result for SHA-256 0187feee53672033…

MALICIOUS

PDF

59.5 KB Created: 2020-11-22 02:43:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 0661d61ad9d11253f35945bc29f7d296 SHA-1: 67965762d7f02378d9e1e1697e8870e6461dd58e SHA-256: 0187feee53672033ffaa05b12c2f722ecf68b6bdc1e1ae6cc5df37828228ee93
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, including a link farm detected by PDF_SEO_LINK_FARM, and is flagged by ML and ClamAV as malicious. The embedded URLs suggest a phishing or malware distribution attempt, likely directing users to download further malicious content. The document body, though heavily obfuscated, contains text related to 'electric stickman 2 hacked' and the authoring application, indicating a lure for potentially harmful content.

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://traffset.ru/123?utm_term=electric+stickman+2+hacked PDF link annotation
    • https://leziwave.weebly.com/uploads/1/3/4/4/134446015/2949072.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f8fa69324cf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384645/normal_5f8ecf6551132.pdfIn PDF document text
    • https://nepagezefo.weebly.com/uploads/1/3/4/4/134472827/jodewed-gelosulak-laroxilewod-kofopefu.pdfIn PDF document text
    • https://defanagaki.weebly.com/uploads/1/3/4/6/134699442/7103099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470833/normal_5fa8e886b52a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487208/normal_5fb3c5e93922c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421213/normal_5f9c370f2dafa.pdfIn PDF document text
    • https://raxuzorufureraw.weebly.com/uploads/1/3/0/7/130775378/309179.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/sugowubuf/butudizale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78f0e2c5-08fc-4de2-9bb5-39343bd2415c/diarios_de_vampiros_1x1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0efabfc-1388-427a-8fc8-8e44f51c1e2f/74711421729.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_off0000af1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF1A 5332 bytes
SHA-256: 294e9558c4e23b67dc9e318e4b11d62775da150d6e4dfe45f5139d82fe549757
font_01_sfnt_off0000c113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC113 9608 bytes
SHA-256: 461a81949265a54447b09f720d01fcfe0d8eb472fd4623f1632a0938bcf09141

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