Malicious PDF — malware analysis report

Static analysis result for SHA-256 44cc4efda2a8de2e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-10 23:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b581d44ef290ade9f574753c3704d0c2 SHA-1: 289ad9a73fb596ac631eb1a9e1608085140d8d25 SHA-256: 44cc4efda2a8de2edf7a156ff0699b237fc6f6ef7e8063af1823757054e1336a
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One of the primary links, 'https://ttraff.cc/pify?keyword=subway+catering+menu+pdf', is identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'Subway catering menu pdf'. The overall structure indicates a link farm designed to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=subway+catering+menu+pdf
    • http://files.messianiclaw.com/uploads/1/3/1/4/131437671/96b168b8553fddc.pdf
    • http://files.faubionmiddleschool.com/uploads/1/3/0/8/130874143/5327c939cf367.pdf
    • http://files.cjhawkins.net/uploads/1/3/1/3/131383398/0a31cf4f51a0cc.pdf
    • http://files.brcbeach.club/uploads/1/3/1/4/131437977/ferajiba_xazeviriva.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/35119242163.pdf
    • https://cdn.shopify.com/s/files/1/0434/7792/6040/files/assignment_of_contract_texas.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1015/files/mevukevamot.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/biopsy_interpretation_of_the_uterine_cervix_and_corpus.pdf
    • https://cdn.shopify.com/s/files/1/0431/2144/2977/files/rajasthan_current_affairs_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/hibbeler_statics_13th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0437/8096/4510/files/9462042841.pdf
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/super_troopers_torrents.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/gipogodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7365/8273/files/donekidakejorijekiro.pdf
    • https://cdn.shopify.com/s/files/1/0428/5785/7187/files/36787866109.pdf
    • https://cdn.shopify.com/s/files/1/0430/8349/7621/files/medical_certificate_form_for_leave.pdf
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/how_to_print_autocad_drawing_to_scale.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_off00006a19.bin
2e0a5b3e4e88b0d04667ec1b6b4c68f97f1dac2d4d4f1aa743d9b11dbce27376
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A19 5700 bytes
font_01_sfnt_off00007d7f.bin
bcfcbf70cd666d684e98c392be9f2f93a5d879572831c205f4df28d4c306e911
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7F 9836 bytes