Malicious PDF — malware analysis report

Static analysis result for SHA-256 432cc5c90faa2352…

MALICIOUS

PDF

41.8 KB Created: 2020-10-26 14:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3cb43bb3835c9f626a0ddedc58d1524f SHA-1: 32ef196de0a447cb85eb28dd1fa873b3706b56c7 SHA-256: 432cc5c90faa23521c17ffdbedadb23e4f236917d7c7b7b07ebd96e0453b9a47
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains a large number of external links, many of which point to disposable hosting and redirect to known malicious infrastructure. The document's content and heuristics indicate a lure for payment redirection or a callback phishing scam. The embedded URLs, such as https://ttraff.cc/123?keyword=wallis+return+label+pdf, are designed to lead users to fraudulent sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ttraff.cc/123?keyword=wallis+return+label+pdf In PDF document text
    • https://mimoberojatef.weebly.com/uploads/1/3/4/3/134316463/28d7c5ec4775a.pdfIn PDF document text
    • https://xukanimuwuvam.weebly.com/uploads/1/3/2/6/132696198/5422008.pdfIn PDF document text
    • https://bozalugim.weebly.com/uploads/1/3/4/3/134343660/vunewavulojunavevag.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/xuguzebejazeg.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/5e07aa38b2d30.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/rexobevumalob.pdfIn PDF document text
    • https://xemojunaxumig.weebly.com/uploads/1/3/4/2/134265853/gureregodelinejojoku.pdfIn PDF document text
    • https://jedarixires.weebly.com/uploads/1/3/0/9/130969076/4976201.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/kezonezabam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7545/1053/files/white_stripes_seven_nation_army_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2083b00-0bd1-45bd-8b96-5ba162c0377d/xasogisumofomom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7217bb7-1762-4974-9ce0-def92dd1d789/pasiwofibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc738a85-d0e5-43e7-a736-acbd0f3e87e5/tampines_street_83.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/891f3ebd-9d73-43e1-928d-caf53f237539/gugatukizejil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/7735/3639/files/76437564063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8113/0691/files/84350522973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/8237/9164/files/laperilalififujajix.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_off000062e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E7 5188 bytes
SHA-256: f2f0f22065cc8e9e3da74c3cbcbb9164147c2700e1e274038689aef9a1eb190d
font_01_sfnt_off00007499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7499 10976 bytes
SHA-256: 99c0559a407047af8166796d6e25a22638e2d7073ed9576b01716d33f01849c6