Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dad15058b199543…

MALICIOUS

PDF

57.4 KB Created: 2020-08-22 21:06:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4e6bbc1c641d2b42146d4e91a71f3a0 SHA-1: 7a1456ab78a569408b9ae20965a48d612241c8d3 SHA-256: 9dad15058b199543b0993fa419fc0892b9afc437f384c28f8d6419d086e72d87
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, disguised with a search query for a car manual. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely as part of an SEO link farm to improve search engine ranking for the malicious content. The ML classifier strongly indicated 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/pify?keyword=2015+buick+verano+manual+transmission In PDF document text
    • http://files.hatsbyelvee.com/uploads/1/3/1/0/131069887/d4c83ee68cc5e98.pdfIn PDF document text
    • http://files.precisiondiecutting.com/uploads/1/3/1/3/131380341/defaveveviz-pizaxe-sovab.pdfIn PDF document text
    • http://deraroz.waxent.com.au/uploads/1/3/1/8/131857315/fezunugatinafexo.pdfIn PDF document text
    • http://gadominux.amyluckenbill.com/uploads/1/3/1/3/131398020/tewukaj.pdfIn PDF document text
    • http://biwad.stmarysclinic.net/uploads/1/3/1/4/131409310/601c672011ce.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/1/0440/5955/8053/files/wirilumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1989/3927/files/zaneguto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/15671183122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/phd_thesis_on_leadership_styles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2402/files/waste_management_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1951/5557/files/13106873958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/74325110800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6109/9161/files/sibisaxofinufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2493/3287/files/fonedofiwosowusedonexi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000733e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x733E 7524 bytes
SHA-256: 2169b6d24ec9d231786d4eee80bf0ee9b382b70350b05b99e76c575a3c16e250
font_01_sfnt_off00008ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA3 5564 bytes
SHA-256: a6c59c8c95507f54efc3cbae08d4feb4088ea0fc3482c173b65ce2282429f2a5
font_02_sfnt_off00009f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F79 10404 bytes
SHA-256: 240981176981ada0d432b2a6e4e38ab18c0d2c6da6caf9027008b115a8926c00
font_03_sfnt_off0000c356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC356 16060 bytes
SHA-256: ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833