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)
MD5: 1d62a73cc38d412f6e59686d22aec8af SHA-1: 489ee89d57e1f6013b3d025f0350abd2b5f3a165 SHA-256: eebc6d30ffc17f865646083aeaf4ee1c81bc4863217ad500b0a803bbf5c3f03f
152 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 4

  • 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.
  • 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
    • http://files.elliscme.org/uploads/1/3/1/3/131379059/xawototavi_dodumifokekoja.pdf
    • http://jogeta.cremedelacremecakery.net/uploads/1/3/0/7/130739615/5c9b85812705.pdf
    • http://files.wildfeatherfamilyfarm.com/uploads/1/3/1/0/131070604/1742643.pdf
    • http://gogapijib.suphanahong.com/uploads/1/3/1/4/131482995/tekokibunodafu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/kerala_beverage_price_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/45189906892.pdf
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/mijovafovunosupawebejuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/62253886143.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/11545588823.pdf
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/acrobat_reader_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/59856094245.pdf
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/2309779609.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/information_technology_business_profile.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/poluze.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/fanapirodimirede.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/riguroviponuzoneteg.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/berijevimikavumiwanizefe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

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

Open this report in the interactive analyzer, or submit your own file for analysis.