Malicious PDF — malware analysis report

Static analysis result for SHA-256 392350a39ba23bac…

MALICIOUS

PDF

52.5 KB Created: 2020-08-10 12:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d77764e6327e1ba7b22d94a64cffc419 SHA-1: 171e04e9a721e0120da727d9a77dd276da4fdddc SHA-256: 392350a39ba23bacd63db040e2b97352cc151ea98d2d9e8fefa950642c88fd75
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body itself is heavily obfuscated but appears to contain the same malicious URL. The ML classifier strongly indicated maliciousness. The primary attack pattern involves luring users to external malicious sites via these embedded links.

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=technology+innovation+definition+pdf In PDF document text
    • http://raren.milesalumniatl.com/uploads/1/3/0/7/130776760/titab_difanisaw.pdfIn PDF document text
    • http://files.emilypassman.com/uploads/1/3/0/8/130873851/woliwimomile-jajifik-ketotawe-nijapa.pdfIn PDF document text
    • http://files.nickburbey.com/uploads/1/3/2/3/132303269/tovatebi_bekekegugotof.pdfIn PDF document text
    • http://files.leuvensgenieter.com/uploads/1/3/1/4/131437702/ginexogip-vipegaxir-taxovanotavaxux.pdfIn PDF document text
    • http://files.edgewoodfarms.net/uploads/1/3/1/4/131437766/8a3e1d73.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/php_number_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/69971825536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/jopixasaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6703/8109/files/68392913469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/english_academic_word_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/zoxefovuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/mibefulelukesak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5308/7897/files/62279299670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3707/2280/files/jogon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/jovorexiwomikaledononij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7657/3601/files/15473423185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0681/9477/files/87043585195.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000821e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821E 5044 bytes
SHA-256: e1ce65420b8fbe9484c441ddd0fe41a5046f7996d7f46272b91f7eed95dd7c87
font_01_sfnt_off0000934a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934A 10452 bytes
SHA-256: 1b52a86d0635962dbfbf91ed79b035e4bca1e2fcd3ecc840effad91b9338f272
font_02_sfnt_off0000b6c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6C2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3