Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e862fa4b593f690…

MALICIOUS

PDF

103.6 KB Created: 2021-05-29 12:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3a706610aa634ed37895b1f0117cccb4 SHA-1: b13cb73a4b8f717d33fc1fa4417052832b330323 SHA-256: 2e862fa4b593f690c923d62ac0bd029e4230f20ba65cd9ab1cade2220c13723b
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-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://pelibifir.ru/strik?utm_term=what+to+eat+on+high+fat+low+carb+diet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4443809/normal_5ff8998df3db7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478146/normal_604ceeb5e3cc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453901/normal_5fe24eebcc24c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403429/normal_603e4046c830e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484624/normal_605fa51e5923d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407316/normal_601a6b5407061.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451350/normal_60223ecfe7de2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445106/normal_606c91d0542c6.pdfIn PDF document text
    • https://baveretam.weebly.com/uploads/1/3/5/3/135314503/jufototuwusiza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445749/normal_601093d766f48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492275/normal_5ff696ed649d6.pdfIn PDF document text
    • https://nudidilekeluxi.weebly.com/uploads/1/3/4/3/134384451/3353051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446490/normal_603351a0712d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446781/normal_601f623837007.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483071/normal_6052ba9697de3.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/8ca9efd9-56a8-48c1-902c-c1fed443acd3/jenuterawidawasik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e8e708-daa2-42ad-8352-132e415eb28e/snap_on_solus_pro_16.2_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d7132b5-3e5d-41b3-b2ee-523f1edc4ec7/ryobi_one_18v_cordless_chainsaw_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bacf9912-9bfc-4e92-969c-9b0778382bd7/photosynthesis_elodea_lab_report.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CA8 5140 bytes
SHA-256: d69de1d405e44a4b471f127486c5296d27f643f59cb33930135d805b1e38905f
font_01_sfnt_off00015e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E30 10840 bytes
SHA-256: d5643f0d04fade1dff14426d37377bfaaefdf7a04075aa81839f5420cea91cf3
font_02_sfnt_off00018331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18331 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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