Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e03629343d8030…

MALICIOUS

PDF

37.7 KB Created: 2020-08-11 12:44:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ded03928241e682500d712e6f483d28 SHA-1: 9577f10fc747c8e414cba27cb870fd6722b783f3 SHA-256: b1e03629343d8030bd662bf074d7a4b252948c27e1733dab4ad7dc63a5858c9b
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to external PDF files hosted on various domains, suggesting a link farm for SEO manipulation or redirection. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.com/pify?keyword=biserial+correlation+pdf'. The document body, though heavily obfuscated, contains this URL and other PDF links, reinforcing the redirection attempt. No scripts were extracted from this sample.

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=biserial+correlation+pdf In PDF document text
    • http://files.labyrinthcreations.com/uploads/1/3/0/9/130969543/7674498.pdfIn PDF document text
    • http://bemax.glenvarbaptist.com/uploads/1/3/0/7/130775432/3335908.pdfIn PDF document text
    • http://files.midwestbooksellers.org/uploads/1/3/2/6/132681670/juruj.pdfIn PDF document text
    • http://files.crisbaumann.com/uploads/1/3/1/6/131606248/fevusoz.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/1/0432/6490/1270/files/45360178612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/70316492727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2281/8200/files/jukasem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9769/4114/files/zomigowisurimed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7730/2427/files/niradijepofezure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4737/7301/files/2622598423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/resoxomovagazokulewikix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/bengali_calendar_1426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/zuluvuvizesakegazirav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/55350213647.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 7

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_off00005565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5565 5200 bytes
SHA-256: 5cd93a7c2a54aad438833481656b78137c107bf39505f9c708f1ce0a6eb48f8c
font_01_sfnt_off00006715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6715 10356 bytes
SHA-256: 371a30146366d2d289562996475624d6b7c22aba40684808281de2695f04cdf0

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