Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d43cc862b106711…

MALICIOUS

PDF

43.5 KB Created: 2020-08-11 01:10:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e7d425e25969168701980539885820f SHA-1: 1b1cb3a84cd2c36ee5dbe348f481f20cb309c465 SHA-256: 7d43cc862b106711a6549fde6e1019e987016b2bfac73deca962b4cb9b1ae687
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com), suggesting a link farm or phishing lure. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector link confirms the intent to lead users to a potentially harmful site. The document body itself contains the malicious URL, reinforcing the attack pattern.

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=mrityunjay+kadambari+marathi+pdf+file In PDF document text
    • http://files.evilsizor.co/uploads/1/3/1/6/131606490/jotugezefe.pdfIn PDF document text
    • http://files.spashphysics.com/uploads/1/3/2/6/132681504/nipewowifodokogamem.pdfIn PDF document text
    • http://xarevilo.thebalistreetdog.com/uploads/1/3/0/8/130874254/durukapuduge_jufalojasonamuw.pdfIn PDF document text
    • http://savem.woolandmen.com/uploads/1/3/1/4/131453574/940946.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/1/0431/9831/6705/files/bhagavad_gita_yatharoop_in_kannada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/33868542716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/97701963221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/sociologija_kulture_i_umetnosti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/resepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7047/8746/files/77752302378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/traitement_de_surface_aluminium.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/fuxagipasofizisaris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/54275996466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2325/6999/files/94269761701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/13417751769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8509/3281/files/86932850075.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 6

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_off000069fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FB 5492 bytes
SHA-256: 9560a6ed7d4d833768e50b067703b6b0ae4106724d5a3b691e3773a88dd8f481
font_01_sfnt_off00007c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C90 10608 bytes
SHA-256: 028a7497e8ca20ae0abbb4898fa2eb3ea1d583a6a2a1eb50a8a0264d6fc0e091

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