Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f000e31361315b…

MALICIOUS

PDF

43.5 KB Created: 2020-10-03 06:20:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1d7615a72851939d7b2483ee8a08a315 SHA-1: 681dda9cfd73f1c8b83b1d9325befd5600568cbf SHA-256: 34f000e31361315b9725b4a95b8c94436c405322ea161e8ec8b161bb223a5e8d
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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) or Microsoft license-boilerplate 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://cctraff.ru/pify?keyword=high+impedance+headphones+vs+low In PDF document text
    • https://site-1037182.mozfiles.com/files/1037182/xafamijofasariber.pdfIn PDF document text
    • https://site-1040132.mozfiles.com/files/1040132/kakukipusopix.pdfIn PDF document text
    • https://site-1038353.mozfiles.com/files/1038353/20802263193.pdfIn PDF document text
    • https://site-1037098.mozfiles.com/files/1037098/duvudamedejala.pdfIn PDF document text
    • https://site-1036932.mozfiles.com/files/1036932/zubibenezadukoxiduxanir.pdfIn PDF document text
    • http://files.esivu.fi/uploads/1/3/0/7/130738792/a332b.pdfIn PDF document text
    • http://tegopem.grangerlandrfd.com/uploads/1/3/2/7/132741100/43a2b5bff.pdfIn PDF document text
    • http://files.sewsweetdesigns.net/uploads/1/3/1/0/131070366/8437753.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/e88bb029-0946-44a2-9cdf-37021ddd655e/patuvubipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6145069-0761-47ed-8efb-4bcd48a129b1/lutidotisixurabuburu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a96a70b-2929-4df2-90f7-77d88823e3da/widumavoramaneragatox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f933b33-f0c7-4abd-8d56-6088bd8df145/nexilageliwonikirere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0542/9928/files/loxulog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5644/7136/files/54169014710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0225/2442/files/puppies_for_dummies_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0116/2146/files/46427265132.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A72 5504 bytes
SHA-256: 27ad029b6ee33beaf48bd843d32b7f0e3f776a3ead2452aae5c84f3a13a15eb0
font_01_sfnt_off00007d1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1E 10456 bytes
SHA-256: c7c44ff5a18c4dc32518c29a703b9d5fb40e5d3498c2e5a930c7bb0c7e7e9294

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