Malicious PDF — malware analysis report

Static analysis result for SHA-256 af74a821512d37f2…

MALICIOUS

PDF

41.9 KB Created: 2020-08-21 16:18:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92d57f8c2cd42baad2e6f5d31e990402 SHA-1: 14c437ea7178510c82c739f1bd436eea9c72483d SHA-256: af74a821512d37f27f4c8c69cdfca09da530efb8f938a1a2c3e9044d277b8168
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific malicious redirector URL, disguised with a lure related to a 'biochemistry lab report template'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the primary link leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests the document is designed to generate traffic through numerous outbound links, many of which point to benign Shopify domains but some to unknown domains that could host further malicious content. 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.ru/pify?keyword=biochemistry+lab+report+template
    • http://vasud.annaengels.com/uploads/1/3/1/6/131636648/relaxobi_kikerogikazuvo.pdf
    • http://files.tmichaelstone.com/uploads/1/3/2/6/132695535/zokibatifanijelajis.pdf
    • http://wiguwux.juiceboxfargo.com/uploads/1/3/1/6/131606183/2af402f76959.pdf
    • http://fofiwo.mymodernsolutions.ca/uploads/1/3/1/4/131438500/1206732.pdf
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/rap_rhyme_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/36411329092.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/94288970956.pdf
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/bobakedasap.pdf
    • https://cdn.shopify.com/s/files/1/0437/6769/3474/files/renokalumidagovizuzakota.pdf
    • https://cdn.shopify.com/s/files/1/0432/8108/8670/files/illustrator_reduce_size.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/buku_standar_akreditasi_puskesmas.pdf
    • https://cdn.shopify.com/s/files/1/0428/6195/3191/files/betipatowesitubag.pdf
    • https://cdn.shopify.com/s/files/1/0431/6502/4412/files/money_and_barter_system.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_off00006592.bin
07134766d2add0f1ea78f4cc9a9281e90e2798e921769e3a187e7de3384dd3cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6592 5464 bytes
font_01_sfnt_off000077fd.bin
a6b4c571588e5b2ed2b80c206540560ffce8fce761aaec33dd885fcd449a4e19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FD 10212 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.