Malicious PDF — malware analysis report

Static analysis result for SHA-256 f466701bd6e7b124…

MALICIOUS

PDF

66.4 KB Created: 2020-12-04 05:09:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1d2b0bfe5c2d4b15d10997542f4cd1b2 SHA-1: d8abb69b1d7e7b074e7a9c03b53e93c8b3f49499 SHA-256: f466701bd6e7b12416c6225ad60b1a7d177454b4426416c733f6e65fe1fe7c5c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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
  • 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://traffking.ru/strik?utm_term=patch+burn+grazing+heterogeneity PDF link annotation
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/bagatazojiz_sidatasofugugor_sofaxazute_gureluf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5faf3821349e1.pdfIn PDF document text
    • https://lopinelu.weebly.com/uploads/1/3/4/3/134369173/sewuxumilo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476765/normal_5fab1528e7ab0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457862/normal_5fb6b14611434.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385434/normal_5faf852ba94c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5fa05ae4c9b96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379222/normal_5f9b6ffda1c58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385648/normal_5f9416c609cb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475847/normal_5fba652233a44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483071/normal_5fb2dbf0bb466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493600/normal_5faffac83867e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417645/normal_5fa569ef1cab7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423429/normal_5f9824c47e74c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418557/normal_5f9f80a15fd0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404955/normal_5fc9a78f98b24.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/4d41a2e9-2f30-4f49-b90a-76127b9bf73c/63957498897.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC43F 5144 bytes
SHA-256: 93f1a942028505bf504e7cc89c9c1db9e07ca5208d59db16c62ccbb78b2f246f
font_01_sfnt_off0000d5ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CE 12300 bytes
SHA-256: dd6b0df48c613ea265beb612d9d7fdd105fce99549acd99b63b8254419908813

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