Malicious PDF — malware analysis report

Static analysis result for SHA-256 8545fcf1676212ee…

MALICIOUS

PDF

40.5 KB Created: 2020-08-08 03:26:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56e9521efd80f60b5083543c28818bfc SHA-1: 44abc19bf49fc2bf0da41247d60282b233049eaf SHA-256: 8545fcf1676212eedaa0d3f2d4b7b59645ae89bb2cea43aa003f97076ae958e9
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links designed to redirect users to a malicious website, masquerading as a service manual. The ML classifier strongly indicated maliciousness, and the presence of a redirector link to 'ttraff.com' suggests a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded URLs point to a social engineering attack.

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/wb?keyword=volvo%20penta%20service%20manual%20pdf In PDF document text
    • http://files.phonerepaircolorado.com/uploads/1/3/0/7/130775009/2418fd04eb354.pdfIn PDF document text
    • http://files.selfhealingsuperfoods.com/uploads/1/3/1/4/131407469/1605171.pdfIn PDF document text
    • http://files.marzipan-media.com/uploads/1/3/1/8/131856184/7584706.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/1/0432/2459/6642/files/25665907937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/falaxozus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/kumiwun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3016/7203/files/tagokuwudupanepifokenure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1004/7645/files/cephalopods_of_the_world_vol_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/zevodile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/15065458136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/80138439960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/95838408783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6177/2442/files/xipawexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8161/3987/files/i_got_the_hook_up_cast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1254/files/kodajalevinakakedod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/95958894692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0670/9159/files/2nd_grade_math_challenge_worksheets.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_off00006038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6038 5328 bytes
SHA-256: 6991f9a51e6e45ef27acf1cc969192648a850bb4b24b67f44751b77bcbd1e350
font_01_sfnt_off00007247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7247 10220 bytes
SHA-256: b363d3af94cd1aee062b914bf5cec15a0b4fe3257c4b19e4fd8c45d0fd5b4dbc

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