Malicious PDF — malware analysis report

Static analysis result for SHA-256 e094c1c32934e1a2…

MALICIOUS

PDF

56.9 KB Created: 2020-11-13 19:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0aa148bd82b6a6455920b26208eac17b SHA-1: dcc32aa7dd70513fa29dfadbc0d050e339657ec6 SHA-256: e094c1c32934e1a2b3b5bd155266c885db5d2a3df401ec95306df317c42784f6
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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/strik?utm_term=return+of+the+jedi+despecialized+edition PDF link annotation
    • https://tunuwowidu.weebly.com/uploads/1/3/4/6/134606858/sizutaka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450251/normal_5fa2d694a8c44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422627/normal_5fa4162b6000d.pdfIn PDF document text
    • https://xuvarilanagore.weebly.com/uploads/1/3/4/4/134470983/9519376.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f89c20d49aa9.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/movav.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/ravuxudibure/young_living_digize_baby.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/poulan_pp4218a_chainsaw_chain_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/sindrome_anemico_severo.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/gelod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2f3766f-28f7-4c8d-a905-64a715556046/30260924345.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f901cb6-380a-44c4-8b42-a0a58f7d249a/nawejilaweneb.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_off0000a503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA503 5376 bytes
SHA-256: d254aede51f67add4631e66752a3e18e4f313c4cf0340f46b318e5a7236fd0c6
font_01_sfnt_off0000b758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB758 9300 bytes
SHA-256: 26553302656a69f0c4cb79326b043e48cce69777c70f69670e372599e992dfe3