Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0292da0f19f15e6…

MALICIOUS

PDF

33.0 KB Created: 2020-08-26 10:15:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34b735ffc044e93727ebd68aa3dd13ab SHA-1: 5f9273aeb43e7d01368a13f1cae1ac17dbdc3bdc SHA-256: b0292da0f19f15e672802ec1090bf6965327378fa0dcb28944aea8cf7049c1ad
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the same malicious URL. The presence of numerous other links, many pointing to benign Shopify PDFs, suggests a link farm or SEO poisoning tactic to disguise the malicious redirector. The primary intent appears to be directing users to the malicious URL.

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.club/pify?keyword=vo+tuyet+voi+nhat+rap In PDF document text
    • http://files.belviderestar.org/uploads/1/3/1/3/131398236/182428.pdfIn PDF document text
    • http://files.klutchcuisine.com/uploads/1/3/1/3/131380342/9328449637.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/1/0436/6719/4021/files/cutnell_and_johnson_physics_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8424/2334/files/signs_and_symptoms_of_pregnancy_induced_hypertension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/28051875081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/lean_six_sigma_yellow_belt_exam_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2752/1948/files/tenunimepipewuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/carb_cycling_diet_meal_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5872/5018/files/65120430314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/10505128835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0508/2780/files/gakonali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/81268585196.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_off00004559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4559 4824 bytes
SHA-256: bc3acdc5d4eabbc95381a62c9ac8356cf69d482af7f4212a8cdda61e0da825f0
font_01_sfnt_off000055c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55C9 9840 bytes
SHA-256: 575f715cf120b9f5be48194ffc691699b3ebc23c341991bae2c2d2f25512837e

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