Malicious PDF — malware analysis report

Static analysis result for SHA-256 924d7abeddd617f5…

MALICIOUS

PDF

41.7 KB Created: 2020-07-31 12:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 432bf642547c458772ae713660f3f677 SHA-1: 60cb2e53939706d1c5884d1ec4dc03b0e09d7505 SHA-256: 924d7abeddd617f5a5303c1d81b0a08ae6fbc3cb611ace2ed81e7802ad2baca6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a significant number of embedded links, identified as a link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.cc/pify?keyword=defensa+personal+militar+pdf', is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'Defensa personal militar pdf'. No scripts were extracted from this sample.

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=defensa+personal+militar+pdf
    • http://files.pattonvilledb8.com/uploads/1/3/0/7/130775143/7264206.pdf
    • http://files.dlaciejeanne.com/uploads/1/3/1/4/131407080/rezitip_vuvasugex_wojirakofizivi.pdf
    • http://files.triciacroomdoula.com/uploads/1/3/1/4/131453136/kojodigu.pdf
    • http://files.weeklyrunt.com/uploads/1/3/1/3/131383753/4db6b666a.pdf
    • http://files.dlaciejeanne.com/uploads/1/3/1/4/131407080/rezitip_vu
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nezax.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/15036813013.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/visebitizujajum.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/84522812953.pdf
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/23439403006.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/24404034350.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/sujujasibivisipebadeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5156/files/77156057376.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/4292204602.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/9249325924.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/93205347006.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_off000062b7.bin
1848e78eb3f45fb4bf01b8aa53b181e8aef7fcb846e032cf87abaebee170595a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 4976 bytes
font_01_sfnt_off00007386.bin
70ef8cb3d69ffb2d05b1bc5c9f72c95049f1601f65f954bfa1aa3658621a656e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7386 11176 bytes

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