Malicious PDF — malware analysis report

Static analysis result for SHA-256 78dc46df1e2c5016…

MALICIOUS

PDF

36.8 KB Created: 2020-08-09 10:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc1092289bfce1ef37f5bbff78c61aef SHA-1: 3a39f6d887500dcd64f1ff52788130f5ff938580 SHA-256: 78dc46df1e2c5016cc405e168cd0e4cde257964b7cc1c9eef9b9f6ae9f5cf2a1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links, many of which point to a redirector infrastructure. The primary malicious link identified is https://ttraff.cc/pify?keyword=patofisiologi+stomatitis+aftosa+rekuren+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to a malicious site under the guise of providing a PDF document. The presence of many SEO-optimized links further indicates a link farm or phishing attempt.

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.cc/pify?keyword=patofisiologi+stomatitis+aftosa+rekuren+pdf In PDF document text
    • http://files.tanyawilliams.org/uploads/1/3/1/4/131407047/vajosexobi.pdfIn PDF document text
    • http://files.q-bos.com/uploads/1/3/2/7/132741064/zixuvukafikow_gejebexema_zurulenena.pdfIn PDF document text
    • http://zumezumo.mosaico.ch/uploads/1/3/1/3/131380213/3b4214529aa3a0.pdfIn PDF document text
    • http://files.ronnieroseband.com/uploads/1/3/0/8/130813797/a7f99.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/1/0436/6221/3273/files/ptcb_practice_tests_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4068/1633/files/basic_technical_mathematics_with_calculus_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3384/4119/files/38190087182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/72265800686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/98393636846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6427/9718/files/leaked_snapchat_by_location.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3726/8900/files/74767793135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/bomisufasatozebudumitude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2678/4157/files/japji_sahib_meaning_in_punjabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9140/2660/files/wcf_tutorials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1792/files/minecraft_pe_0._12._3_apk.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_off000051a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51A9 5428 bytes
SHA-256: 394da4773421a061e69e10eef25deedcceb55e472a31b6b11e0585a308a6b912
font_01_sfnt_off00006411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6411 10028 bytes
SHA-256: 4e2b4f5e58d9f51b328f1174ec89809c3b07367cfb8e7f14ffd11eab7ff5cff2

Open this report in the interactive analyzer, or submit your own file for analysis.