Malicious PDF — malware analysis report

Static analysis result for SHA-256 367fc49e0ceae56f…

MALICIOUS

PDF

76.2 KB Created: 2021-03-21 05:07:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4f315086daee208057ec3ebaad8ef600 SHA-1: 9eb9ed665c6a924005d852e86acaa71f43ec2fe2 SHA-256: 367fc49e0ceae56fc948f6f639e4cbe3ed1f05a8bd0fca83a66586bae2e85b86
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 0.9993

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://lozipotod.ru/wix?keyword=borderlands+2+impaler+any+good PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409118/normal_5fc9aa12bf291.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413473/normal_6002e92792166.pdfIn PDF document text
    • https://pekowemorexoxuk.weebly.com/uploads/1/3/1/3/131380284/c1807e2e7c4dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459318/normal_5fc8aa228d72f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404292/normal_5ff5d2e20b53b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459328/normal_603beb13cf755.pdfIn PDF document text
    • http://flowerport.store/bosigamimugaloromde89b.pdfIn PDF document text
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/sowidokaxuv-redepugo.pdfIn PDF document text
    • https://suzefajadovu.weebly.com/uploads/1/3/4/5/134592553/e2bba6893.pdfIn PDF document text
    • http://pegixudovojap.iblogger.org/5749765789.pdfIn PDF document text
    • http://reabook.online/canon_eos_20d_dslr_price_in_pakistanvhsui.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481156/normal_60533a3e2475a.pdfIn PDF document text
    • http://gikadoketu.iblogger.org/how_to_learn_korean_basic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468836/normal_602f973af1924.pdfIn PDF document text
    • http://limuzinof.ru/738343404290rlnz.pdfIn PDF document text
    • https://lopodegif.weebly.com/uploads/1/3/2/6/132695694/giveku-sosojezotame-rojim-gudobexanukigud.pdfIn PDF document text
    • http://gbo.guru/gelisosugunikokadigaxire6mlqh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_601afa28151e8.pdfIn PDF document text
    • https://bamegipizof.weebly.com/uploads/1/3/4/6/134647446/vunomoke-rorizimutivate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393035/normal_5ffca067dbed3.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/4b107c75-d4b5-48c6-9806-cf87628ea49d/sony_hdr_cx240_camcorder_review.pdfIn PDF document text
    • http://fikakoba.rf.gd/59562808287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85ace1d2-6099-43ce-b341-437377395192/mimovadekuw.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_off0000e8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8ED 5564 bytes
SHA-256: f291fbd4d7acfcc90eb8648518c95616a6f1466c3d9abaa222c163f2d0c718b3
font_01_sfnt_off0000fbce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCE 12228 bytes
SHA-256: 2cb11d20a470714085c8f53b965be805ddea5dc3188df69bae54c4b0616f9508

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