Malicious PDF — malware analysis report

Static analysis result for SHA-256 224b3cd485b0fdf9…

MALICIOUS

PDF

73.3 KB Created: 2020-11-30 10:41:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 0c6c68019ee0a2e6638f8a514a4550b1 SHA-1: a1dcf834c8a41ca68a6bd0345cb4c07590c00607 SHA-256: 224b3cd485b0fdf985d597e4d0a31d4655e28578b3bff0a3bfe707c2b19d8e38
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/strik?utm_term=tabla+y+calendario+liga+pro+2020 In PDF document text
    • https://piladokad.weebly.com/uploads/1/3/4/7/134759874/loralit_rimozununa_manevi.pdfIn PDF document text
    • https://wopusuxosar.weebly.com/uploads/1/3/4/5/134583764/069a408d0f401.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rorives/water_dispenser_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/814cc3da-136e-4ee3-9a81-76415f5268be/70226863752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f65effd-d871-4664-9a6b-ee48a53c6830/rear_view_mirror_adhesive_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8eb6404-da5f-4851-8b88-2b3c44a3b79f/futew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/089ab079-54aa-4bf1-bb9f-dcdfdb5796a2/fuvesabesipotitozuvow.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f769ec917750a3d83c85/t/5fc20fcef81c9a2a0ce93a7f/1606553551203/go_fund_me_page_titles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd12f00-c740-46ac-ad85-29623884c00b/siganoxuxez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46b9075c-35b9-48b7-a1f9-282a1f4569c2/39079280929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9deca342-fd4d-474c-9ca1-e5d5b3b0547c/ceeport_cleaning_card.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f198e04c-7577-4d64-bd08-96f3823bf3ee/kopowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64f27ec0-02d6-47b5-9864-8bc4d20df278/musiwuxew.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dac460f2895dc1e79d89/t/5fc116b24f98375720062de8/1606489782370/diwubulebitojolikededolox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/049dab29-2405-4822-bfad-649fd37bbdec/84930590505.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_off0000dccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCC 5528 bytes
SHA-256: 6a31f6ed03cf081aa94e155eb089aab2fd81404b307e5ea51aa085bb0f364f97
font_01_sfnt_off0000efa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA9 11944 bytes
SHA-256: c3b0556e39a091ac6c2a232dc1c1ebafbb9fb07411a27fbf332d6e4f7d03b6ba

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