Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c1d496b49ef397…

MALICIOUS

PDF

42.8 KB Created: 2020-08-01 22:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 753d52774184c6bf69e4aa9ae818b0a1 SHA-1: 5e9148225d9e76ef5af124fc7f8a58748e0e64ba SHA-256: f9c1d496b49ef3973f719df64f6689fe505fe9a4e42d60764dbfd065927cd6fe
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm designed to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=abyssal+tentacle+gungeon, which is likely used to redirect users to a malicious site. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the exact lure.

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=abyssal+tentacle+gungeon In PDF document text
    • http://files.ajportablebuildings.com/uploads/1/3/1/3/131380583/girolevu.pdfIn PDF document text
    • http://files.bestficoscore.com/uploads/1/3/0/7/130739227/5444896.pdfIn PDF document text
    • http://files.patrickinpanama.co.uk/uploads/1/3/2/6/132696274/jijanowavuxo.pdfIn PDF document text
    • http://files.whitegallowaysofwayby.com/uploads/1/3/0/8/130873907/fewubogukobavel-sixomolimu-mifip.pdfIn PDF document text
    • http://files.planningforgrowthnorthsk.com/uploads/1/3/0/7/130739169/5251933.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/1/0439/8402/7806/files/banowidexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/gupox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3355/1260/files/seloxufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/vuzajewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/tivimunemuver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/tuwezalexadusovibodutalix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/25730353668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/90169233766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/siwobiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/99288131510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3460/5728/files/xovajogitiwukumorawud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/69429377578.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_off0000694f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694F 5100 bytes
SHA-256: 06332c8219c20aa03188bcb375d57592dafdede96c5294310492ba715a9d74fb
font_01_sfnt_off00007acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACC 10424 bytes
SHA-256: 293012505aeb90b842d336cf36e8f463fcad4568884f7830c3f33761796704b0

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