Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b2349ec3bc0679…

MALICIOUS

PDF

78.1 KB Created: 2021-05-11 09:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e79c7ed0abc148122c6041a07f896056 SHA-1: 82203668475640589bd4cabcafb6c7a75031cad4 SHA-256: c0b2349ec3bc0679ba9f4c0b5c0a4e4966771cedd55b3bcd0dcc684e7cf2e1bc
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains keywords related to 'Xbox one controller cover amazon', likely used as a lure to encourage users to click on the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/strik?utm_term=xbox+one+controller+cover+amazon PDF link annotation
    • https://severuzilun.weebly.com/uploads/1/3/4/7/134710190/1bf410265ea9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388422/normal_60090471beb3b.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/60142113379.pdfIn PDF document text
    • https://tenanetudoji.weebly.com/uploads/1/3/4/2/134266315/waxetawifuzunor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420239/normal_6058cc8e743ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384460/normal_6027f2aca2c85.pdfIn PDF document text
    • https://zefuriduzowav.weebly.com/uploads/1/3/0/7/130740504/3799485.pdfIn PDF document text
    • http://welitizenowem.mywebcommunity.org/how_to_get_a_wedding_dress_quickly.pdfIn PDF document text
    • https://fixupikavejezop.weebly.com/uploads/1/3/4/3/134392539/rofabenos.pdfIn PDF document text
    • https://xakalawuvobovu.weebly.com/uploads/1/3/1/0/131071286/152343.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453532/normal_5fe65ef220efc.pdfIn PDF document text
    • http://tatuxuvoziparu.mywebcommunity.org/arduino_starter_kit_english.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/0b7627fc-4a71-4ae3-90f6-d680ea4bc0d8/53527940999.pdfIn PDF document text
    • https://234d5d8d-19c9-4cab-a884-dd0775662658.filesusr.com/ugd/fb7225_a26012e0a0444b9c97d64e2de4cb1293.pdf?index=trueIn PDF document text
    • https://5cbbff6b-7c47-4fbb-abda-9de5069fbc88.filesusr.com/ugd/1a89c8_b202a36d4a224c969adb5c7ffc3e4f9d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1473782a-f9aa-449d-b06e-e66ee46114ed/ruzagewubetiturotux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a88d318-9e0a-48a3-8e43-3cee69577be9/32417047683.pdfIn PDF document text
    • https://65de77fc-0341-4fd2-89b2-cd6b005a91de.filesusr.com/ugd/cf79db_4b1db79f600141c4bdd47cae78253f80.pdf?index=trueIn PDF document text
    • https://4fe85328-8dbf-40e9-afa8-2c8d6ff8a9c8.filesusr.com/ugd/9c0842_205893353fc24ea28bce40ac3eac25e6.pdf?index=trueIn PDF document text
    • https://6974b9b2-fc2a-4e9b-9495-84ff65489eb7.filesusr.com/ugd/395280_3138ec634b644a928cb2043530b7ae1a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3794244-6ee9-4391-ae4d-c9369fd406bc/trane_air_conditioner_canada.pdfIn PDF document text
    • https://54d25d35-1219-4e5f-97c3-905e72ea606f.filesusr.com/ugd/6d59ab_7675b9819fe64721aafdc7474b5929ab.pdf?index=trueIn PDF document text
    • https://9aef9be9-4304-4ec6-b02b-ded1eabc5d1b.filesusr.com/ugd/a571b8_8366dafc4840486193e50ab6f768e3f8.pdf?index=trueIn PDF document text
    • https://fb5b3b17-6e6a-47c5-ae49-26eddba71e57.filesusr.com/ugd/aff7be_45fc028ce89240b2a835b1b59846c930.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/22507134-95a7-4ebc-bd6d-ab4399e20d7b/drow_of_the_underdark_3.5.pdfIn PDF document text
    • https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_ad9864ece3cd4435906b49e34262929e.pdf?index=trueIn 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_off0000f1cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CD 5060 bytes
SHA-256: 59fef2472b063ff6cab5998cc237f9b85fa2031ba9e73df9cba1fe84727331a3
font_01_sfnt_off000102fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FE 11260 bytes
SHA-256: b154a40eb27bf1ac01167b97764348eff020983e45d5cfb684f39c38bdf9a89b

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