Malicious PDF — malware analysis report

Static analysis result for SHA-256 c31e7e5156097af0…

MALICIOUS

PDF

42.3 KB Created: 2020-08-13 02:04:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bdc347fd2175c3dd6327ebc6f539182c SHA-1: f558a8bfa78e4f33a0279f29beb1419d2fb3830b SHA-256: c31e7e5156097af0553f92b0cc61b85a211199f63e7f575bcca5b123a4e8f58d
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.ru/pify?keyword=manhattan+logic+games+pdf'. This suggests the document is designed to redirect users to malicious content under the guise of providing a PDF. The ML classifier strongly supports the malicious nature of this PDF.

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=manhattan+logic+games+pdf In PDF document text
    • http://files.pantaipetroleum.com/uploads/1/3/0/8/130814402/vulef_wutiz.pdfIn PDF document text
    • http://files.bedfellowsmagazine.com/uploads/1/3/0/7/130775808/1824352.pdfIn PDF document text
    • http://files.gwgraphicdesign.com/uploads/1/3/1/4/131437276/4404868.pdfIn PDF document text
    • http://files.azsmashersbaseballandsoftball.net/uploads/1/3/1/6/131606630/dazavib_rubefux_dekebokoto_zegijibixezuvuf.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/1/0434/3595/0236/files/96984794978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/69917290581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5832/1818/files/kayla_itsines_nutrition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/rastafari_bible_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4716/5850/files/fuderanibevuzomijuvage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/latimifakojakono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1052/9176/files/medical_laboratory_all_test_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/guvuzufamurakuwuros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/73719151724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/namejuvowomawewukaku.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5959 5268 bytes
SHA-256: be042a5f42daf125970698f6ccedffc39b2acf30e957f02e1fa0ff1d5168180d
font_01_sfnt_off00006b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B19 10332 bytes
SHA-256: 4200406392f4df2ac386bd8a7415642799c3baf0ef75afdf8d10ac0bc7f36f09
font_02_sfnt_off00008e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E68 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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