Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58af05acf7b0e12…

MALICIOUS

PDF

38.0 KB Created: 2020-08-09 07:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d0a50fee2988e765e108368cbd9d40a SHA-1: 13c30a11678873009597bfe75cd6d1bcedb71251 SHA-256: e58af05acf7b0e12ffca1aa05eb5a1b75584d2c319235236062e6fe000884c96
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm with 15 external PDF links, designed to appear as legitimate educational content. One of these links, found in the document body and flagged by heuristics, redirects to malicious infrastructure at ttraff.com. The ML classifier strongly indicates maliciousness, and the overall structure suggests a SEO poisoning or link farm attack.

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=benim+hocam+e%25C4%259Fitim+bilimleri+ders+notlar%25C4%25B1+pdf In PDF document text
    • http://files.2skypattaya.com/uploads/1/3/0/8/130874394/9273732.pdfIn PDF document text
    • http://files.oasisorientalmedicine.com/uploads/1/3/1/3/131398250/f79da607f01d.pdfIn PDF document text
    • http://jivumid.bremertondancecenter.com/uploads/1/3/0/8/130874493/1608742.pdfIn PDF document text
    • http://files.glassicalcreations.org/uploads/1/3/0/7/130740165/607003.pdfIn PDF document text
    • http://files.goodpsychology.net/uploads/1/3/1/3/131384638/vefavojikali.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/1/0431/7269/2122/files/carbohydrate_deficiency_diseases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/30094600776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/ruwigojoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/vofobojorozavejuvabomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/sugadisesarosotewuziz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/zepusoganig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9168/8610/files/muzilovofoler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5892/0610/files/roxinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3747/4466/files/miller_and_miller_mathematical_statistics_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/national_achievement_test_result.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 8

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_off0000525b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x525B 5844 bytes
SHA-256: 864a8f871b51a1b1938adf7032de8d3c473171a292a520f6cf3af9fe4e451f50
font_01_sfnt_off00006612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6612 10844 bytes
SHA-256: d9d35dcd7d7d405cd1fbd28c720925b48f44d55d175d4e8a41f3a1992176038f

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