Malicious PDF — malware analysis report

Static analysis result for SHA-256 21708fcc747ae7aa…

MALICIOUS

PDF

73.3 KB Created: 2020-12-15 07:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f68dd79cad587cc21d68c215c2cb6350 SHA-1: dd32a2c0bf21461bffe77c9069232ae3b5e759a1 SHA-256: 21708fcc747ae7aaca11425ad37d100ae0abe7a4e3c7dab5b3cc648e409d6a98
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or phishing campaign. The presence of a 'John Wick 2 full movie free' lure in the document body, combined with the PDF_SEO_LINK_FARM heuristic, indicates a social engineering attempt to drive traffic to malicious sites. The ML classifier and ClamAV detection strongly support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffine.ru/123?utm_term=john+wick+2+full+movie+free PDF link annotation
    • https://tudupumodowi.weebly.com/uploads/1/3/1/4/131406798/vixezuxapa-texewenagig-dewuxukazavi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f915b33f1d2f.pdfIn PDF document text
    • https://jewezuwexokuj.weebly.com/uploads/1/3/4/7/134717424/c9dd5d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444114/normal_5f9d648105e62.pdfIn PDF document text
    • https://pijezokonogoxa.weebly.com/uploads/1/3/4/3/134308979/jobenatubu_daroza.pdfIn PDF document text
    • https://gidujinogojavu.weebly.com/uploads/1/3/4/0/134096303/tizalowisinonilisof.pdfIn PDF document text
    • https://wazawuxara.weebly.com/uploads/1/3/4/7/134762715/rokubarasajalux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf62d59b1ed03538d2fd2c/1606378197789/vivitivogewaponoxirij.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc689fec14dfd36fe18787c/t/5fce89854f39131e418237d2/1607371142252/57720418769.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc112c117e7202640eb3140/t/5fc188ad7acac6192afae640/1606518958173/tread_softly_because_you_tread_on_my_dreams_movie.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0012c12facd59cea80d2a/t/5fc1000c3c02f22b9d30d879/1606483980554/thongs_are_not_comfortable.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a69f81da8a590db1d885/t/5fd68f280f11661d4c32edc2/1607896873772/agile_epic_example_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef25a751-4115-4909-b333-671ba5d6c1bc/radio_shack_pro_651_manual.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_off0000e031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE031 5072 bytes
SHA-256: 76793f121a3d157bc66967bc6cf57101c3eb10695e8116d9a8f87cfde0471bc3
font_01_sfnt_off0000f168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF168 11164 bytes
SHA-256: 214885b34a18f9cec95322eaed530a1fcd3f574037b358641b3f78c194065c1b

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