Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2aa167cf97befa8…

MALICIOUS

PDF

43.9 KB Created: 2020-08-01 11:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a683c122a9a80492eaea5dcbe2300d66 SHA-1: 710431e5a8232eb4e9c28d76cb7e5163b083ec87 SHA-256: d2aa167cf97befa8e1b27e60980b13f19700486702d3ddea9d1ebe64cd75551d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The presence of a link farm suggests an attempt to distribute malicious content or phish users. No scripts were extracted from this sample.

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=hello+world+html In PDF document text
    • http://files.triangleparentingsupport.org/uploads/1/3/2/6/132683357/kilixiregupezo.pdfIn PDF document text
    • http://files.ohmylashuk.co.uk/uploads/1/3/1/3/131398268/zigolawamu-lupaxa.pdfIn PDF document text
    • http://files.gillianjoy.com/uploads/1/3/0/8/130813982/mizuzunijawun_xatopaviperi_rigakegaf.pdfIn PDF document text
    • http://files.pipinchicksilkies.com/uploads/1/3/2/8/132815178/4e6d589a4c2.pdfIn PDF document text
    • http://files.moderndaysolution.com/uploads/1/3/2/6/132681634/aaa5f7e6.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/1/0433/3037/1738/files/gofigojogupovanenox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/2174150529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5865/1545/files/widows_media_player_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5932/2773/files/tawijunij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0840/9250/files/bunubetalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7495/files/d_d_5e_short_rest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1524/8794/files/rotigozipexuxakonemonor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4702/4805/files/17123888091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0658/1147/files/casio_protrek_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/regomadil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/lexupijadumasunimez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8036/5720/files/forimasozim.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_off000065ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BA 4732 bytes
SHA-256: 94cf48f91a6087b9364527015068d05177c157ed3511acee946d0aa4fd6dfc3f
font_01_sfnt_off000075a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A9 14716 bytes
SHA-256: b147091a101eb9dd6671e2ad7afba0676894c19a11867acdae206233b5c961f9

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