Malicious PDF — malware analysis report

Static analysis result for SHA-256 801b4496658d37d3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-28 02:12:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d23cb1a084bba3dacedf7c66927c37ec SHA-1: bbaf7ee9dec651cce37dd199e2188d17f24ebd82 SHA-256: 801b4496658d37d3b6009f56b9335c7c9316863140f1fd1d8d786aa6d5bcb16e
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) that is flagged as malicious. This indicates a phishing or scam attempt, likely using the guise of offering free documents to entice clicks. The ML classifier also strongly flagged this PDF as malicious.

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=buku+akuntansi+biaya+mulyadi In PDF document text
    • http://dojos.atlanteanheart.com/uploads/1/3/0/7/130776483/7209153.pdfIn PDF document text
    • http://files.kothariinfotech.com/uploads/1/3/0/8/130815093/talerem-gotuzovi-tedawafawadil-sexurefumamudug.pdfIn PDF document text
    • http://files.elizabeth-noble.com/uploads/1/3/0/8/130874197/03448.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/1/0431/2596/4966/files/83351798898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/cadena_trofica_ecologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2363/7402/files/template_powerpoint_free_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/xununipafuzexokasuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0757/8009/files/mastering_physics_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9831/2609/files/15055610654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/rugowopaborakuripo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3197/0460/files/gulosapetada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/breviario_del_caos_albert_caraco.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2809/4882/files/vuloxuxebupidutasadipuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/95224884831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/dasizulifegorujafej.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 1

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_off0000696c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696C 5232 bytes
SHA-256: 4cd3df7b679d3ba08fc0accb9e2fdf8497bda7ddc768d864480a7ba236a01d58
font_01_sfnt_off00007b2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2D 10080 bytes
SHA-256: c59d6fc8c94a8c95d22573564fcb17071f8fecafac5a1f03ca0ee522307d9ef4

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