Malicious PDF — malware analysis report

Static analysis result for SHA-256 14fefae4506b55db…

MALICIOUS

PDF

67.4 KB Created: 2020-11-20 11:21:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: bd9c5d1652fc5dfa1eda8ab383b66922 SHA-1: 68380db012040e78a4a5f5896837432013a86f3d SHA-256: 14fefae4506b55dbfe48ebeb748ffd7ad6b1a8194f913013d197ff9857686bbb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffset.ru/123?utm_term=this+is+my+father%2527s+world+lyrics+maltbie+babcock PDF link annotation
    • https://sutudaxete.weebly.com/uploads/1/3/4/4/134497902/rozebu-wawigivaxekuper.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/wuziguxazus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369664/normal_5fafa8a4ca8bf.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bf4458.pdfIn PDF document text
    • https://satijezusadevu.weebly.com/uploads/1/3/4/3/134310115/gurodaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414166/normal_5f999a976c9d6.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/7e830b74-b0e1-4a87-bfc1-afdf0b3eceb5/brighton_high_school_girls_soccer_utah.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/asbestos_claim_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74cf84c9-7917-4577-ae5a-c372f0c70bb0/chinese_mahjong_rules_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a409e8c5-e357-466e-8aa8-4d7b6724ec07/78458067931.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/78171368145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/739fa569-88a1-4e0d-a5f7-bdcb5662d937/kerala_bus_design_skin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f1b49e8-bd8f-47eb-b8f4-829158097e0f/toxenixavosesewiripekatej.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_off0000c84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC84D 5644 bytes
SHA-256: 43969a2b6ad2e4c55818e871315b714df3e16b442050453de1a512dac54bc8e5
font_01_sfnt_off0000db6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6D 10816 bytes
SHA-256: aa335675c1d7dee9d991f6d63b5c407d5bb8b1e8e015b2ff8b1d0333e14f2eb8