Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b79447abc555fa…

MALICIOUS

PDF

37.0 KB Created: 2020-08-01 23:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4688b74944bee535862439f5ca0387d8 SHA-1: beea1e89f49b28ad44de608af4d0398585d6ee11 SHA-256: 17b79447abc555faa0d9a3a2d0f1b21d331ce85b649bd5151ef4ed7df7359b9c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to an SEO redirector, which is a common tactic for phishing and malware distribution. The primary redirector URL, https://ttraff.ru/pify?keyword=differential+equations+polking+pdf, is flagged as malicious. This indicates the document is designed to lead users to potentially harmful content, likely a scam or further malware download.

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=differential+equations+polking+pdf In PDF document text
    • http://files.rbt247.com/uploads/1/3/1/4/131409526/2374065.pdfIn PDF document text
    • http://files.sheplayswithmud.com/uploads/1/3/0/7/130776276/xorunurew_warem.pdfIn PDF document text
    • http://files.a1bsolutions.com/uploads/1/3/1/4/131438419/wapuzojozagumi-bidofurafataso.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/1/0433/0687/7080/files/5555796470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7818/8198/files/85014159865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29883534071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/jojuvodajab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9162/files/49902832474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6970/files/99049929151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7763/1126/files/54822313369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/vakukofil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5271/files/43735004914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/vofutudaxokixoboguza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4660/7784/files/46272223058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3707/3314/files/30077344179.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_off00005220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5220 5400 bytes
SHA-256: e0289581ee8085ed8e12b1651ec0293fd1f0869e582cf87819e47d2d216b91ec
font_01_sfnt_off0000648f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648F 10276 bytes
SHA-256: 6fba3b3d1313b5b82596945739620f366081b8677757b925d917a673ca183f03

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