Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9bce9037b72d905…

MALICIOUS

PDF

49.7 KB Created: 2020-08-04 15:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1da4e19fc4809a235f03250561cd210 SHA-1: 181352292274122334329e02621cdaafbe6f5cc8 SHA-256: d9bce9037b72d905d6f6f7b5e243747b559843f7e2e491a66f5796e914b11e89
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to a malicious SEO link farm, specifically `https://ttraff.ru/wb?keyword=transmission%20fluid%20change%20manual%20car`. This URL is identified as a malicious redirector. The document body, though obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a phishing or scam attempt to lure users to malicious infrastructure. The ML classifier strongly indicates maliciousness.

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=transmission%20fluid%20change%20manual%20car In PDF document text
    • http://files.readingthechinadream.com/uploads/1/3/1/0/131069887/kebekod.pdfIn PDF document text
    • http://files.mrlukewayne.com/uploads/1/3/0/7/130775429/b135ce.pdfIn PDF document text
    • http://files.habitualspender.com/uploads/1/3/1/4/131453348/sivoj.pdfIn PDF document text
    • http://files.dobwallsjuniorsfc.co.uk/uploads/1/3/1/3/131398143/vebuvobubaluxipoju.pdfIn PDF document text
    • http://ruzuxuxo.ahbuildingservices.com/uploads/1/3/0/7/130740051/5fae8730b40.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/1/0432/4248/7972/files/32155702153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/4608282591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/how_to_add_artboards_in_illustrator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9563/files/kurokekologutolewiludowix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0198/6723/files/85961776176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/lifigefakixilotibox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8748/7385/files/66582178069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/13126361084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2112/2211/files/jebotedesuveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8918/2376/files/80298262883.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_off00008432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8432 5384 bytes
SHA-256: 44b135a588bf61c35a27c8f762aac2e53057c800f4e4295356bf6b46d689727a
font_01_sfnt_off0000964e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x964E 10428 bytes
SHA-256: fa2ff3ca5a311356d6649d6feba2b5b994d28e20b86c96760c1da6573eec43eb

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