Malicious PDF — malware analysis report

Static analysis result for SHA-256 b924ed1cb4cd6102…

MALICIOUS

PDF

56.0 KB Created: 2020-08-07 23:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fb8081ffa828ee4ee33220b251d0c44 SHA-1: 7700c6969ca9824b453ad708500681527d5650c4 SHA-256: b924ed1cb4cd6102b2fd3fff74bc5fb4aa4915c10c36810a5da81a1714c40a2c
120 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 'https://ttraff.com/pify?keyword=modulo+ritenuta+d+acconto+pdf'. Additionally, it exhibits a PDF link farm behavior with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to redirect the user to malicious content.

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=modulo+ritenuta+d+acconto+pdf
    • http://tixeponed.davenportsandgravel.com/uploads/1/3/0/9/130969060/rigoviz_lekenoru_wobolujodomezu_fukigubad.pdf
    • http://files.dtoxtogo.com/uploads/1/3/0/8/130874058/zogiwiwakuwuz.pdf
    • http://files.girlscoutsu440.com/uploads/1/3/0/9/130969546/jupalijonagape.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49893706483.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/bugatolan.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7674/files/xanalovalemox.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2437/files/precalculus_ron_larson_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/zowuwobagifipapijogili.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/rafalenejefojemogabiri.pdf
    • https://cdn.shopify.com/s/files/1/0439/3422/0456/files/fabiboxowigokizes.pdf
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/59554924718.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/suliloboguvijuxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0769/6286/files/aseptic_food_processing_operation.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/38550479461.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/35707850848.pdf
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/patikotimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/sugaxomifutubaributevusev.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_off00009d74.bin
16585402bafdfa406c8d49877d0de46dc3f071218391ef337e5d87ac77476555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D74 4976 bytes
font_01_sfnt_off0000ae7d.bin
0645310a43c5631ad6063768a7b73e05dd59e9ef628012d01b05b7c66a4ba62f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7D 11228 bytes

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