Malicious PDF — malware analysis report

Static analysis result for SHA-256 491d04c1dd46d84f…

MALICIOUS

PDF

35.9 KB Created: 2020-08-01 13:07:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6700ee5716e1bb6689450454820a286e SHA-1: f5f72af6ff2810da6137ad986803b383fe7f5542 SHA-256: 491d04c1dd46d84f5c7e31609860997982dbe3fb32cb0d613645c62b695c1124
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a PDF link to known malicious redirector infrastructure. The document body is heavily obfuscated and appears to contain garbled text, but the presence of the URL 'https://ttraff.ru/pify?keyword=fassbender+swanson+funeral+home' suggests a lure related to a funeral home, possibly to disguise malicious activity. The high volume of external PDF links also indicates a potential SEO manipulation or link farm tactic.

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.ru/pify?keyword=fassbender+swanson+funeral+home
    • http://files.aquietandpeacefulplace.com/uploads/1/3/0/8/130814121/9263829.pdf
    • http://files.coolanniestravels.com/uploads/1/3/1/6/131607404/9597755.pdf
    • http://files.gabrielsadzewicz.com/uploads/1/3/1/4/131438120/pelikuwezu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/25511398507.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/46334005380.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/rinuxufokebilopalutojel.pdf
    • https://cdn.shopify.com/s/files/1/0440/5015/3622/files/winafiwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/96158583754.pdf
    • https://cdn.shopify.com/s/files/1/0430/3064/2837/files/keguzibizuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/8496/2200/files/58714992820.pdf
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/jetibefo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/4640349210.pdf
    • https://cdn.shopify.com/s/files/1/0430/8130/2167/files/lawrence_welk_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0439/1917/9931/files/bewizizilalajapawovem.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71409998288.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/rovulirosuvoj.pdf
    • https://cdn.shopify.com/s/files/1/0439/5014/5704/files/jajobefanojuzu.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_off00004cd0.bin
c9d1f57f1385395669b4aa7d7a8a242a10d335ddbab79b26af174c9301a33d81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD0 5336 bytes
font_01_sfnt_off00005ed8.bin
49bc0bd10e68762a6e9631cd04339201912a269708335a103d071078acc09017		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED8 10424 bytes

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