Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a9e1bb5b8b9d88…

MALICIOUS

PDF

37.6 KB Created: 2020-08-14 14:11:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de94712b083160af24887c51f6cbff66 SHA-1: 0725facda5daad5aa7ec72ca62a5d569b3f02c29 SHA-256: f2a9e1bb5b8b9d8863963af484963adb947b9ae4e0b5f1bec80f515073d3e5a1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=canada+infrastructure+report+card+2017. The document body, though heavily obfuscated, also contains this URL and numerous other Shopify-hosted PDF links, suggesting an attempt to leverage SEO or create a link farm. The ML classifier also strongly indicated maliciousness.

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=canada+infrastructure+report+card+2017 In PDF document text
    • http://files.thegreatbigdanceoff.com/uploads/1/3/1/6/131636965/328b7950.pdfIn PDF document text
    • http://wuwabo.just5minutesaday.com/uploads/1/3/2/6/132683041/6721844.pdfIn PDF document text
    • http://files.chinalux-bsc.com/uploads/1/3/1/6/131606094/e3721243b6b1.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/1/0433/0687/7080/files/21884581804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/dudupumifidatoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/tivojivosagedovaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/31883881935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/89118479664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7184/8100/files/wusodazazojuvemulofigosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/12291776524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7880/7705/files/dhuna_ne_shkolle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3585/files/pevafutelunokamiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/kazavuvakexaxetik.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_off000054e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54E3 5428 bytes
SHA-256: 3c82c28445fa6bca77abb7332d7765ab96f0ac056cb07cf722d9eb965a1df0b4
font_01_sfnt_off00006768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6768 10032 bytes
SHA-256: 8ed292e789ea245975201743ddc2ac0ed9ca54e8326dc825e019fd0d4a423e49

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