Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8de68174f841fd2…

MALICIOUS

PDF

69.3 KB Created: 2020-12-05 23:51:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 34db7e24a316b393d09ef55c4e51e040 SHA-1: dd216e94524c2f335b463c7b1de3b7e9da0058cd SHA-256: d8de68174f841fd270cb72ce9539f22fc78be084b2e6728cc311c34763825ed2
224 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically mentioning a 'backdoor roth ira conversion tax reporting' lure. The SE_PAYMENT_REDIRECT_LURE heuristic further indicates a pattern of impersonating financial institutions to solicit sensitive information. While no scripts were extracted, the embedded URLs and the nature of the lure suggest a phishing attempt to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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/aws?utm_term=backdoor+roth+ira+conversion+tax+reporting In PDF document text
    • https://cdn-cms.f-static.net/uploads/4468843/normal_5fb5627b560cb.pdfIn PDF document text
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/6386052.pdfIn PDF document text
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/8685457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393754/normal_5fc13d90be0f0.pdfIn PDF document text
    • https://xifugewelude.weebly.com/uploads/1/3/4/3/134353264/8752577.pdfIn PDF document text
    • https://vegiranelikir.weebly.com/uploads/1/3/4/3/134399044/4555150.pdfIn PDF document text
    • https://puxedeva.weebly.com/uploads/1/3/4/7/134730870/5538481.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/5fc1057cc30a162e0c5324ce/t/5fca92acdd8a8730b06c1631/1607111340539/38821402968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/738b38be-827d-44fe-84be-1f0d5f58413a/dragon_ball_z_budokai_3_ppsspp.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/globalization_in_contemporary_world.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffa571c8c7413142c9acf/t/5fc0e385fa04221c71406c53/1606476679259/shark_pro_steam_pocket_mop.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf549b08845d0924814e54/1606374555708/backpage_mcallen_tx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb97f7a8-7ad0-4ec9-9d2c-c023a15ee110/another_word_for_relaxed_person.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_off0000d280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD280 5544 bytes
SHA-256: 7a386f98a110270b034ef724e420149d6bb8929c12630e46ad2a86ed6524112f
font_01_sfnt_off0000e567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE567 10244 bytes
SHA-256: bd70d83e9b56704817f3490498921fd0614016161505ec19142f4e1f1fcc94f1

Open this report in the interactive analyzer, or submit your own file for analysis.