Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebc6d30ffc17f86…

MALICIOUS

PDF

46.7 KB Created: 2020-08-06 19:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d62a73cc38d412f6e59686d22aec8af SHA-1: 489ee89d57e1f6013b3d025f0350abd2b5f3a165 SHA-256: eebc6d30ffc17f865646083aeaf4ee1c81bc4863217ad500b0a803bbf5c3f03f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a benign-looking PDF filename, suggesting a lure. The PDF also contains a mass external PDF link farm, with many links pointing to shopify.com, likely for SEO manipulation to improve search engine ranking for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=chemistry+chart+periodic+table+pdf In PDF document text
    • http://files.elliscme.org/uploads/1/3/1/3/131379059/xawototavi_dodumifokekoja.pdfIn PDF document text
    • http://jogeta.cremedelacremecakery.net/uploads/1/3/0/7/130739615/5c9b85812705.pdfIn PDF document text
    • http://files.wildfeatherfamilyfarm.com/uploads/1/3/1/0/131070604/1742643.pdfIn PDF document text
    • http://gogapijib.suphanahong.com/uploads/1/3/1/4/131482995/tekokibunodafu.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/1/0434/9159/0308/files/kerala_beverage_price_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/45189906892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/mijovafovunosupawebejuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/62253886143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/11545588823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/acrobat_reader_for_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/59856094245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/2309779609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/information_technology_business_profile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/poluze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/fanapirodimirede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/riguroviponuzoneteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/berijevimikavumiwanizefe.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C2 5540 bytes
SHA-256: 29ba1cf8577eb5653941d08334206d36adc4e5d00ea27f8a9e2b690dda65aa51
font_01_sfnt_off00008a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A69 10356 bytes
SHA-256: b0471529d73ea4ddffe84c493e3f553bad4499e46be658ebdcf3bcc8b82c39c2