Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cbab6346bb8b63a…

MALICIOUS

PDF

36.8 KB Created: 2020-08-02 03:35:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4475ae3c2f0ac4866612f5f85d07569 SHA-1: bef8d18f9c316519e41c4e0a09e30467bc0407ba SHA-256: 9cbab6346bb8b63a5fa26cd9e0ec3d117de3598a37442732d1171bd07cb0b0dd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, forming a link farm. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is likely the primary malicious payload delivery mechanism. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the presence of the link farm and the malicious redirector indicates a social engineering attack aimed at redirecting the user to malicious content.

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=foxfi+full+apk In PDF document text
    • http://files.kobanuniverse.net/uploads/1/3/2/7/132710624/b3c2d2598da5.pdfIn PDF document text
    • http://files.debbiepowersauthor.com/uploads/1/3/1/4/131437446/535a815243f.pdfIn PDF document text
    • http://files.moanxiety.com/uploads/1/3/1/8/131857465/001aa.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/1/0429/5114/7679/files/bipisinebuburiroxopogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0371/5489/files/zugokimewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3445/0840/files/dosasunumemefejakexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4642/8059/files/vedotexipafegarowoxonez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/xigurujomomasatugibapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/dulalovafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8113/0394/files/ferixexuminusapuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6222/3263/files/8436385163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/97833759919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/fawoluruliromulezila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9643/8936/files/31095264588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/nujixigobikal.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_off00005515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5515 4708 bytes
SHA-256: 3417a9c7c1ac95b43e1033198df8c604b2340b1ae1fad5ccd0eefd88b98daa98
font_01_sfnt_off0000653d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653D 9856 bytes
SHA-256: 66f6c2de328751d832e995248828d7b9ae5a8669278f28d23b0c7e3b71aa65b9

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