Malicious PDF — malware analysis report

Static analysis result for SHA-256 b995b1b675d41521…

MALICIOUS

PDF

42.4 KB Created: 2020-08-24 02:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94d9ce41baac8b76400fbec4dc748a04 SHA-1: bea3a3878eb6286e37d8dd2623bcb15ee6925a15 SHA-256: b995b1b675d41521709e46e3755276733838e164736126a46cd72c79613c1311
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains a URL that appears to be the same redirector. The PDF also contains a link farm heuristic, indicating a large number of external links, many of which are hosted on Shopify. The primary malicious URL is likely used to redirect the user to a malicious site.

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=moment+of+inertia+lab+report+introduction In PDF document text
    • http://files.journeybackancestry.com/uploads/1/3/0/9/130969254/sugomodolewiwobo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/bawli_tared_hd_video_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3741/5831/files/jigikekapuposasozegesore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/koguzekafixof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/rupugujuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5778/9593/files/80836984909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/59771881901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6013/3031/files/the_expanse_cibola_burn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/42806799951.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD6 5152 bytes
SHA-256: f254badd014a998058709a18666b625bbe6a9e7a9f2bff1d17a823b6323833be
font_01_sfnt_off00006d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D32 9812 bytes
SHA-256: a0c4f60f8667e973956a099fbbf4556d4557c485dfae5c38b4d7542a5b92fe9e
font_02_sfnt_off00008eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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