Malicious PDF — malware analysis report

Static analysis result for SHA-256 9343896266a8c8f2…

MALICIOUS

PDF

46.9 KB Created: 2020-08-07 09:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d6d0ebd5f453b80a77f061ba79bf113 SHA-1: 64b8ada641cb98398e63c6d1ec156ec12a7ff310 SHA-256: 9343896266a8c8f25f1da04db436aab63f1eba6fe1551f8b3f155c738f78beef
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=ap+biology+lab+1+osmosis+and+diffusion+pdf, is designed to lure users into clicking through to a potentially harmful destination. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF files, suggesting a link farm or redirection strategy.

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.com/pify?keyword=ap+biology+lab+1+osmosis+and+diffusion+pdf In PDF document text
    • http://sokanudax.shopvinocellars.com/uploads/1/3/2/7/132740405/xudad_kekago.pdfIn PDF document text
    • http://files.theboxdonut.ca/uploads/1/3/0/8/130874114/155016.pdfIn PDF document text
    • http://files.greenwoodbows.com/uploads/1/3/2/6/132681586/tosolomudigizeg.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/1/0435/5158/8507/files/lafigib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/97200160446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5469/3529/files/ace_the_technical_pilot_interview_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/lipuxekojodesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/lord_of_the_rings_novels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/popepebexazutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5570/2425/files/rukikepizerulufuzewiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7854/9665/files/tiguzetelekixujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/95042184503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4393/7690/files/45890458737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/balanis_antenna_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/class_10_science_chapter_11_notes.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 4

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_off00007820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7820 5548 bytes
SHA-256: 0b55cb53e2e1c2addd349f29752dcfe8d9465589e2795efb5976f446f2e1c3b1
font_01_sfnt_off00008aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFF 10404 bytes
SHA-256: 17416b6c347b592ad3677c4bcc66300dce448d2658c2e464f8514e1ac52fdeb8

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