Malicious PDF — malware analysis report

Static analysis result for SHA-256 669a67d13b80d972…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 00:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1b63a1e4bb8f5f3137b728311f0c5a9 SHA-1: d2fcd70ef74467843303b776d7b301528b24292d SHA-256: 669a67d13b80d972ed4ae0e781b0ebb972707a8b780d53127d4f4a8583117fd3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains the URL that the heuristics identified as a lure for a 'free-download phishing' scheme. The presence of a large number of PDF links suggests an attempt to manipulate search engine results or create a link farm, potentially for SEO poisoning or to distribute further 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.ru/wb?keyword=vw%20jetta%202012%20manual In PDF document text
    • http://files.littlecakepot.com/uploads/1/3/0/8/130814718/924605.pdfIn PDF document text
    • http://panakavog.massageformommies.com/uploads/1/3/2/7/132740214/4213550.pdfIn PDF document text
    • http://files.mishpuchacamping.org/uploads/1/3/0/7/130776661/zifotavasen.pdfIn PDF document text
    • http://files.unitedchurchannapolisroyal.com/uploads/1/3/1/4/131407565/gixanalovonaf_jivuge_topalirawe.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/1/0435/5974/7745/files/tarozijupejowojowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8089/9991/files/65945123930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/63075656415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/figemefaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9898/8954/files/84591385459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/44908761142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3604/7522/files/47724225429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/gotavuxezulixogojotomej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/podufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8940/3810/files/85065914226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.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 4

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_off00006237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6237 5016 bytes
SHA-256: 53f33a579399d8daa483b04a960f616026e9c1c7995205c0e31e3507a26d1630
font_01_sfnt_off00007350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7350 10220 bytes
SHA-256: 5748e24f7af98b0b27492c4355a4e0ad75ce6f1041d41f8c4977c939d78dfad8

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