Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad85030fbe0927a9…

MALICIOUS

PDF

60.7 KB Created: 2020-07-30 03:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 759e6dad6814ce2d5b4bf9e482d6ae5b SHA-1: af9890d36708b1dfa8d87e0cacb5e8691929f462 SHA-256: ad85030fbe0927a9cc38d12f5a6b26a694ea6c88907c9ad9b145a1b88d294bd5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to programming tutorials. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.ru/pify?keyword=basic+programming+language+tutorial+pdf In PDF document text
    • http://files.124line.com/uploads/1/3/1/6/131607110/9137920.pdfIn PDF document text
    • http://files.franciscanfoundation.org/uploads/1/3/0/9/130969461/rujibagujurofagap.pdfIn PDF document text
    • http://files.controlsace.com/uploads/1/3/1/3/131379042/e17b89c9.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/1/0433/1218/5494/files/jixopixed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/23620065168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1011/3186/files/60341213927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0482/9602/files/dozitumomirumemir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7173/1880/files/50321014730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/91365120500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8673/files/pimebekojosow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1854/1480/files/58205990689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/28283566674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/94086449135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/limebuzugirexasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/gokixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2436/files/rajatupeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0696/6429/files/26977476378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/pugamiw.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 6

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_off0000ae4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4A 5404 bytes
SHA-256: cc1ef63f9384898b5103a4631adce6147f63208416f45462584fcc59374bd8e2
font_01_sfnt_off0000c088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC088 10596 bytes
SHA-256: c1be35ea8dd6ca34712ac24198090e3f9acd8013853e63505ebc267219fa12d7

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