Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca28e6d1ca14c460…

MALICIOUS

PDF

56.9 KB Created: 2020-08-09 00:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 808f02e137482eab086956b76d53686a SHA-1: 7ebba57dd16adae242dc3d01ee89ded9e2b57f10 SHA-256: ca28e6d1ca14c460fedfd381165a2528b17703b255e8f6ebbb6b31bbc74eea18
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=jewellery+making+tutorial+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0435/5453/7624/files/arguments_for_death_penalty.pdf'. The document body, though heavily obfuscated, contains these URLs, suggesting an attempt to disguise malicious content as a tutorial.

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=jewellery+making+tutorial+pdf
    • http://files.teachingkidstothrive.com/uploads/1/3/1/8/131856715/8596130.pdf
    • http://files.malabagoo.com/uploads/1/3/0/9/130968996/64069425bc7fdf.pdf
    • http://files.rootsva.com/uploads/1/3/0/7/130739328/6883693.pdf
    • http://kobiri.lincolnfencecontractor.com/uploads/1/3/1/8/131871674/xababuk-keriliri.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/arguments_for_death_penalty.pdf
    • https://cdn.shopify.com/s/files/1/0437/6422/0055/files/8135060760.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/south_brunswick_high_school_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/wavedakozenawifuzajege.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/taotao_carburetor_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/1684/5469/files/79839344125.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/69781268172.pdf
    • https://cdn.shopify.com/s/files/1/0436/0326/3650/files/zorulokavoduvuwopufumiwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2743/files/83590285639.pdf
    • https://cdn.shopify.com/s/files/1/0434/4312/6438/files/neet_pg_2020_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.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_off00009fb3.bin
78161fe2d2a5db8b07dbc22a84c2c3d10d12a3c96d1e832e843892c90b7a0f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB3 5428 bytes
font_01_sfnt_off0000b234.bin
e61da0c72a1313350b57d93415c5f91f4bc4e2dcfb25b0fc7449b33019a1ecfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB234 10580 bytes

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