Malicious PDF — malware analysis report

Static analysis result for SHA-256 01103d974ce20d54…

MALICIOUS

PDF

66.7 KB Created: 2020-11-23 12:37:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ce8bbf209393911558199e58b25c9d43 SHA-1: dc59f9a40b11e39d9426fae6ef00bb1997b57405 SHA-256: 01103d974ce20d54c75f84ee8bfd6d8e2497fc64b6ba958563423e011caf4ba8
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 0.9996

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://traffnew.ru/strik?utm_term=big+tiddy+anime+goth+gf PDF link annotation
    • https://zikotidule.weebly.com/uploads/1/3/4/6/134604350/pasumisujov_zedusugimanojat_takera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5f989fcb9221b.pdfIn PDF document text
    • https://rabidibizuzej.weebly.com/uploads/1/3/4/6/134648686/74c6ff674e241e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402956/normal_5fa6c23da8f14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372076/normal_5f89f26099ee5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369651/normal_5f8f2f5d70c14.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/adbf8a95-6c0a-471c-8143-f0414dca6e34/gasagalokivekevesejumewuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/254cb3b0-b79b-428d-8afd-5ab95680e155/polygon_definition_stats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59b6552d-7faf-4b54-9e32-d4696c5005fb/51201758125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/010aee2f-0371-4da5-bed5-2db18703836e/39397679995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6033e28a-7fb9-46f7-82ea-9e481873b860/jabuvitutipu.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/instruction_manual_for_vizio_smart_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/263f86e2-a044-41d4-a698-166b87375d32/lelebubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93e6ddc3-0c7e-4347-992e-54c1c12bb4ef/dinoroxigosekemufeka.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB038 4952 bytes
SHA-256: f99be33b059c5cea6202ab29ca3dffbf7a587b1d3dcfbbc879fa4c709a249f7c
font_01_sfnt_off0000c0e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E7 2336 bytes
SHA-256: 5bdc03eda6faf07316f0392338fba87da3254e88c83c20232b2fcb43498fa777
font_02_sfnt_off0000caef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAEF 10744 bytes
SHA-256: 0443a4a211ad0f6c475b4fc3bf1f466a25e59454b62eab3df4b8924ad7197069
font_03_sfnt_off0000efaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAF 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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