Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cdaf9bcafdaaeab…

MALICIOUS

PDF

41.0 KB Created: 2020-08-13 21:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6e43b181f98b071440dca809b8e2fc6 SHA-1: 68eb04706b57680eaec83504e4845d4ac49e9f23 SHA-256: 7cdaf9bcafdaaeabd332133634a22293d7dec4ffcc3b10e2891f1083636d144c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple critical heuristics as a malicious redirector and link farm. It contains numerous links, including one to a known malicious redirector infrastructure at `https://ttraff.ru/pify?keyword=fujikura+70s+fusion+splicer+datasheet`. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to potentially harmful 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=fujikura+70s+fusion+splicer+datasheet In PDF document text
    • http://popili.theendlesslight.com/uploads/1/3/2/6/132695663/7f3487dcf.pdfIn PDF document text
    • http://dagumis.happygreenjeans.com/uploads/1/3/0/8/130873851/36b336e592.pdfIn PDF document text
    • http://files.ravennationarmy.com/uploads/1/3/2/7/132741194/wexifofiluvomopola.pdfIn PDF document text
    • http://files.samandlorisduo.com/uploads/1/3/0/8/130813111/mojap.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/1/0437/6910/2485/files/namadidojugidatememizapuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4624/7332/files/gosupirok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/51650281863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1260/1502/files/bejuwiziraruka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0548/0858/files/wunisebupezimorojoteba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/matching_supply_with_demand_cachon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/diridetagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/66414345813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/fundamentals_of_modern_manufacturing_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0761/4882/files/52919814827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/zaloxobire.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 2

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_off00005e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E64 5560 bytes
SHA-256: b60400353f7f9de1764525dae0e51356799c6f0f2c1575d89723627180434815
font_01_sfnt_off0000714d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714D 11140 bytes
SHA-256: b7d4887b17d8673873321620c0c61e6a489a8e77fe7f318c5151cc6c49eef976

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