Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf47a5c729243904…

MALICIOUS

PDF

46.4 KB Created: 2020-08-20 04:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0624d95e63889bdce544b8ed3b6ec4c7 SHA-1: e62012fbaa74b5215db877d762a57dc5f9e26b8e SHA-256: bf47a5c729243904b83a461ecf916c4ed3aa3f3963e059cc65a3003f31bf98a9
150 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.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to Shopify-hosted PDFs. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be luring the user to a malicious site via the 'ttraff.com' redirector.

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.com/pify?keyword=memehir+girma+bemaleda+meyaz+pdf
    • http://files.southamptondoingitforthekids.com/uploads/1/3/0/8/130815213/sajajesuzuwes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/8813091092.pdf
    • https://cdn.shopify.com/s/files/1/0433/7968/7587/files/city_of_heroes_respec.pdf
    • https://cdn.shopify.com/s/files/1/0438/3673/5650/files/zaxuvivululapusefapiju.pdf
    • https://cdn.shopify.com/s/files/1/0433/6133/7494/files/37122496185.pdf
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/cursive_writing_chart.pdf
    • https://cdn.shopify.com/s/files/1/0432/7168/4252/files/43567297238.pdf
    • https://cdn.shopify.com/s/files/1/0428/6165/8279/files/badger_5_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/vertical_garden_design.pdf
    • https://cdn.shopify.com/s/files/1/0447/9831/2609/files/bodybuilding_weekly_workout_plan.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_off00003dfa.bin
e2dd234d3abacdaec242b23c33de7029ca9e9385296b78fd066276f957741d5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3DFA 18680 bytes
font_01_sfnt_off0000707d.bin
fa4c49875e9c2e937477f39771a93b9ce2b65165ba2841528b5d952108205dc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x707D 5576 bytes
font_02_sfnt_off00008360.bin
86d187645e6d4d8165e0034b4aa05a3d3af41c0e92fc2d5829764ccbd2fbdf89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8360 12676 bytes

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