Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e6e60a255e5b56…

MALICIOUS

PDF

54.0 KB Created: 2020-08-08 19:21:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a395eca7e9529c40dbd49df38262cd1 SHA-1: a61b87bea3e898f71ae79a8c342e55958f76abd7 SHA-256: 83e6e60a255e5b569602e25bd6ccd3f33a52bae3c36b8510f8fab07aea68496d
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=purpose+and+functions+of+hrm+pdf`. This indicates the document's primary purpose is to redirect the user to a malicious site. The document also contains a large number of external links, suggesting a link farm or SEO poisoning tactic. The document body, though partially corrupted, contains the title 'Purpose and functions of hrm pdf', which is likely a lure to entice users to click the malicious link.

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=purpose+and+functions+of+hrm+pdf
    • http://files.earthelementnaturals.com/uploads/1/3/0/7/130776168/bd78948e0567.pdf
    • http://files.grazphoto.us/uploads/1/3/1/4/131437676/mezuxapemigo-fopugakixovip-bazigoxa-favutalonorut.pdf
    • http://files.encouragingbirthdoula.com/uploads/1/3/2/3/132302824/kodumijevu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/kishimi_ichiro_courage_to_be_disliked.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6477/files/wozamepesumizimanovewova.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8306/files/lazeravuga.pdf
    • https://cdn.shopify.com/s/files/1/0433/5907/6502/files/zuxibugiwibofaziruxum.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/86287055922.pdf
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/mastering_bitcoin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/possessivpronomen_tabelle_deutsch.pdf
    • https://cdn.shopify.com/s/files/1/0430/4191/5042/files/entrepreneurship_education_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/sqlite_tutorial_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/2901/2381/files/wikinasulotoradewu.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_off00009586.bin
1c48eb454c06f2ab93e731c0e020bba0975e0f21502d790bb587c83c5deee94f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9586 5364 bytes
font_01_sfnt_off0000a799.bin
797efb6e6b10a40bfab1ad19fbac85c0508e7769d0d4133b757ba64b2efea83d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA799 10436 bytes

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