Malicious PDF — malware analysis report

Static analysis result for SHA-256 801ef8a2df2582c9…

MALICIOUS

PDF

34.4 KB Created: 2020-08-21 04:41:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee5139ebab97ec08fc5391febe51e585 SHA-1: 0a7b08f08f4fcb7a5de2a716d4271052b28e2d33 SHA-256: 801ef8a2df2582c9d0c2a751af54ea89b11a1be008e267b6a5f49b2d8614bed5
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL designed to phish users under the guise of providing academic answers. The primary malicious URL identified is https://ttraff.ru/pify?keyword=spectrum+math+grade+6+answers, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a coordinated effort to drive traffic to malicious or SEO-spam sites.

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=spectrum+math+grade+6+answers In PDF document text
    • http://rorobow.brittanyrediger.com/uploads/1/3/1/4/131455463/55f983eee5d5724.pdfIn PDF document text
    • http://files.freshsenses.ca/uploads/1/3/1/4/131438055/4188298.pdfIn PDF document text
    • http://fepuwivon.ayusewingproject.org/uploads/1/3/1/4/131454526/9890535.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/1/0433/8060/5077/files/autocad_lisp_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8868/2915/files/dolumukazojavabeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3765/5193/files/zijozenojenodibefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2452/2143/files/capitulation_surrender.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3362/files/liduruzurowolarado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1396/2919/files/properties_of_genetic_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/42544729091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8233/3856/files/gaxinapemijovoxibamoliba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8883/0873/files/basic_thermodynamics_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7122/files/arching_effect_of_brick_bonding.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1186/4738/files/155_cdta_bus_schedule.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4973 5804 bytes
SHA-256: a747075e5e23526eead7be3ce202f4316e10f0355c441134f4719907572a981e
font_01_sfnt_off00005d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1F 9352 bytes
SHA-256: ed5be8d36864f6f82749ac25ad97e3e11a4c5f3863c26ec7df0158fac4ff01d6

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