Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d7e08ba7ced87b…

MALICIOUS

PDF

38.6 KB Created: 2020-08-08 06:29:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 568ae5effbed21fd9bf2426b4a52e9e0 SHA-1: 6dfe88d82d84aae33c6d23c64de5ce3de6fed437 SHA-256: c8d7e08ba7ced87b90ba643ea1873f370c87d8195850a5756e97dbe63e833940
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector. The document body and heuristics suggest a lure related to an 'Australian passport application form', directing users to a malicious URL. The presence of a callback phishing lure further supports a social engineering attack pattern.

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.
  • 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.
  • 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/pify?keyword=australian+passport+application+form+pdf+download In PDF document text
    • http://files.homemadenourishment.com/uploads/1/3/1/6/131637150/razoz.pdfIn PDF document text
    • http://files.gogginslonestarfarms.com/uploads/1/3/0/8/130814601/xiderudokomo.pdfIn PDF document text
    • http://files.texascoastalexchange.org/uploads/1/3/2/7/132710748/6d0a519.pdfIn PDF document text
    • http://files.pipart.com.au/uploads/1/3/0/8/130814926/kozulobudo.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/1/0447/4263/9765/files/hypercalcemia_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/81461071174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/fizafunanevezuxajupaxopat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4355/1392/files/past_simple_past_continuous_exercises_elementary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2214/0070/files/4750319126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3598/1974/files/appelle_moi_par_ton_nom_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/zosukesexajudolelate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/91632086828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1239/6968/files/papadigaworavozamom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5199/8623/files/93501721621.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_off00005811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5811 5384 bytes
SHA-256: 397c95a76e092b6956a8ea19fdbe3d4469c9f0cb5fa431de8dfe01c56635f977
font_01_sfnt_off00006a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5D 10308 bytes
SHA-256: 48aed8c5f56598c385b6204bfb85d69b4827b8e542b5627a717159a2e2b226c9

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