Malicious PDF — malware analysis report

Static analysis result for SHA-256 778ad83d7ac97378…

MALICIOUS

PDF

77.2 KB Created: 2020-07-28 16:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f22040b92731baf8cc377e52a8657652 SHA-1: fd0352b0216cbf9ce861552c41185abb4c1d62d6 SHA-256: 778ad83d7ac9737800f7f210b75e6760a5b2085db4c8e8b1ab0a173d650d52e9
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to improve search engine ranking for malicious content. A critical heuristic identified a link to a known malicious redirector, ttraff.cc, which likely serves as the entry point for the attack. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is part of a phishing or malware distribution scheme.

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=business+plan+example+pdf+francais In PDF document text
    • http://files.mindfulserenityonline.com/uploads/1/3/0/8/130874629/pezozulaleku.pdfIn PDF document text
    • http://files.rbowtique.com/uploads/1/3/0/9/130968994/pewozi.pdfIn PDF document text
    • http://files.familyaffaircateringandevents.com/uploads/1/3/0/8/130874332/bifege_dujoni.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/1/0427/7701/8524/files/43335368975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/81954011514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9325/3526/files/muzoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/82554611372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/70157425592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/tanovumobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34993807018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/48380812286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8875/6374/files/53195117417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0548/3942/files/xejadatepama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7354/4093/files/dulenopavulofokip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4016/1435/files/1634212792.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_off0000f289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF289 5108 bytes
SHA-256: 78a8d6a9fe0693ff5935fc74ef6da7cb502207ee9bdac57fdcebcfe85b581176
font_01_sfnt_off000103c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C5 10388 bytes
SHA-256: 2940ac81730e8bd363d7ba1d9dc5ea8de64b636011bc7e3c8ec336d572d1eb49

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