Malicious PDF — malware analysis report

Static analysis result for SHA-256 e46104593a072a10…

MALICIOUS

PDF

63.6 KB Created: 2020-12-05 12:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0a27afa67ddb1779e882f476eba83266 SHA-1: bd465ae01e473c9d4a309556ff3ff968603fe106 SHA-256: e46104593a072a10f625251bac4bb930d385784028d6ac81b3f82a973f0b0714
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=trifling+glyph+of+health+recipe+quest PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374360/normal_5fb4bc802fa5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369323/normal_5f8a137228dd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454971/normal_5fbdbb9280e15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495696/normal_5fb2f6b4a9b76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380882/normal_5f8bf3a457071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5fbc27af5ede3.pdfIn PDF document text
    • https://dugizade.weebly.com/uploads/1/3/4/4/134442098/kawetaxabikusozoma.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/0f612458-0b3f-4e6d-857c-8f4b481c2351/the_new_oxford_annotated_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/59532444065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c766ef94-efa6-46a2-9c85-dabb3d22be71/33516053466.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_off0000b99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB99A 5452 bytes
SHA-256: d53355ad45fd098f3b38d12944cca78536f07f9f79630f6915000730acd19998
font_01_sfnt_off0000cc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2A 10536 bytes
SHA-256: 1f61b97e7a26f06b640f2c14762859466ac04364bd6aa3b228b399391c1ff37e