Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebd29362a37cd2ab…

MALICIOUS

PDF

61.9 KB Created: 2020-08-25 04:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c3d2b277254606316c9b514587dbdf3 SHA-1: 12eb0934ec48191778b759ef230f5488b52d8bef SHA-256: ebd29362a37cd2ab17c703e216fd62af75ddf4e7003b0009d93f832913426cfc
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=avp+alien+vs+predator+movie'. This URL is presented in a way that suggests a lure related to the movie 'Alien vs. Predator'. The presence of a large number of external PDF links, many pointing to benign Shopify domains, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=avp+alien+vs+predator+movie
    • http://files.portlandwatersports.com/uploads/1/3/1/8/131872070/xuguviwotavapomi.pdf
    • http://files.therhodeislandecho.com/uploads/1/3/1/6/131637150/kudugogetol-boxik-fuginemuboki.pdf
    • http://logalixa.moneytalkssummit.com/uploads/1/3/0/9/130968996/depinexi-gakudet.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4437/files/link_up_beginner_student_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/0790/9794/files/77048903981.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/sisekegibapewi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/sojekopegewaviwonefop.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/how_to_sort_in_excel_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/8758/3650/files/dialog_example_android_studio.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/pixexumafibubokusivun.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/52578204486.pdf
    • https://cdn.shopify.com/s/files/1/0439/3956/1630/files/fekelupozosuxibaxokab.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/23181272522.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a7be.bin
1244a4d9c7070bc37a94071fcbf93f4f58382f7b60f648bf175c8e120ef53b3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7BE 4944 bytes
font_01_sfnt_off0000b869.bin
dcec2bc9a09aa2814258c5b37c627fee6185ff642f25f07d4f3e43ce575faf91		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB869 10572 bytes
font_02_sfnt_off0000dc84.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC84 4324 bytes

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