Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a42351f7a98055…

MALICIOUS

PDF

42.0 KB Created: 2020-08-10 23:34:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9b4367db6a9115f4edfca21b31ec8ad SHA-1: 3659d402d433a0c03d162f27ea3baae13ade8804 SHA-256: 67a42351f7a98055d79b416a884a067fa0e65e825ec6f340d29e23946a181c0d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm designed to redirect users to potentially malicious content, masquerading as educational material. The primary redirector URL is https://ttraff.ru/pify?keyword=autotrophic+and+heterotrophic+nutrition+pdf, which is flagged as malicious. The document structure and embedded links suggest an attempt to exploit SEO tactics for traffic redirection, likely leading to further malware delivery or phishing.

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=autotrophic+and+heterotrophic+nutrition+pdf In PDF document text
    • http://vudupumow.nalsofgs.org/uploads/1/3/0/7/130738836/043fa3cc676b.pdfIn PDF document text
    • http://files.bellinfischer.de/uploads/1/3/1/1/131164479/seboja-dovowixadalil.pdfIn PDF document text
    • http://files.eurothreadlift.com/uploads/1/3/0/8/130874295/5135088.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/1/0438/3087/0173/files/zatibax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8338/2427/files/wiwelidaziruxonomelagure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2590/8383/files/23241522201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/68229009301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/fuxuwapuwidufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/jimez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/lifefekakoruziban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/65440909893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8417/2712/files/brazilian_male_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/mizamanagovorezigoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/85436858185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/linukinuvebosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/final_fantasy_7_rom.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 5

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_off000067b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B9 5020 bytes
SHA-256: 4f040f71082ec5c39959295c4003a033e113350733f1ac306e5e23d2fd0eb411
font_01_sfnt_off000078ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CA 9932 bytes
SHA-256: 4ed65e8803dc343d1df58f17377bac5a3781d4fa5101d9d01423173fc8231ef3

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