Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82a56a827218075…

MALICIOUS

PDF

38.3 KB Created: 2020-08-13 16:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c5bacf3e949706c30bc4ce51a5445e9 SHA-1: 601fa427e39e5cd772a6f67936009e61fe75df56 SHA-256: c82a56a82721807558579d34a29d4834663896a382242ed7dc3421476244d99a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to lure users to a potentially malicious site. The presence of a link farm and a malicious redirector indicates a likely phishing or malware distribution attempt.

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/wb?keyword=nic%20noc%20nanda%20pdf%20descargar%20gratis
    • http://files.counsellingpsychologist.services/uploads/1/3/1/4/131411762/powiwup.pdf
    • http://files.deepaklalsaini.com/uploads/1/3/2/7/132740553/fever.pdf
    • http://files.wirralcpd.co.uk/uploads/1/3/2/6/132681823/gewir_fuvisobob_vewugejevukid.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/77179627166.pdf
    • https://cdn.shopify.com/s/files/1/0441/4147/8040/files/tutorial_adobe_premiere_pro_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/61175015045.pdf
    • https://cdn.shopify.com/s/files/1/0431/4991/8374/files/xigobuwufaxulufinibe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5177/7185/files/tedas.pdf
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/barry_cunliffe_the_ancient_celts.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/60077192502.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9571/files/61672924426.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0273/files/85136929844.pdf
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/upsc_zoology_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/43910224416.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/54733738918.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.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_off00005433.bin
e32f4992dd7b49780e6508fc2bc4949e8cf783cfa58021524befa4747546f64f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5433 5260 bytes
font_01_sfnt_off0000661f.bin
891f4b40a665a787ee9283f8c218bbea054d3164087c0886c38045d1aa55ea8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x661F 11220 bytes

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