Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae73092e3f1fb40…

MALICIOUS

PDF

41.0 KB Created: 2020-08-04 23:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b4c27b14a575b7a44d10246017d2a1c SHA-1: d6643f41b613491a534c2577e1fae5e5db0b46f0 SHA-256: 7ae73092e3f1fb40061bdf46f7e2375fecbc4abc45734fcc9872c25830bdbcc9
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to what appears to be an SEO link farm designed to trick users into downloading files. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.com', which is used in a phishing lure. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to disguise the malicious intent as a free download. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware distribution 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.com/pify?keyword=linear+and+nonlinear+functional+analysis+with+applications+ciarlet+pdf In PDF document text
    • http://lelejebe.suzannakrivulskaya.com/uploads/1/3/0/9/130969368/2981896.pdfIn PDF document text
    • http://files.mavensmarket.com/uploads/1/3/1/3/131381046/990800.pdfIn PDF document text
    • http://files.endoyoga.com/uploads/1/3/1/8/131871643/mubafof.pdfIn PDF document text
    • http://files.leaderscalltoadventure.com/uploads/1/3/0/7/130739032/xiwotabukova.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/1/0429/8535/7463/files/napiseruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18608783112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/munakupatabasupevibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/wojebuxigotepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53446206952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/bizowajuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2105/7700/files/96960695325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7044/0095/files/55389179999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/fiwosafukeloju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/34976783764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4529/8080/files/fotixoregozimezirulagagi.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 6

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_off00005f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F61 5376 bytes
SHA-256: 5018330ad7b7eb55774985b12f60cdbf30e81444e59d5b8d0ff35b36c1a4036a
font_01_sfnt_off000071cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71CC 10824 bytes
SHA-256: 09f542aa5442096bb1fb3f2a1b5a4317fc8cd8150d12e66713655469a7950b02

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