Malicious PDF — malware analysis report

Static analysis result for SHA-256 9921ccff93386e15…

MALICIOUS

PDF

46.2 KB Created: 2020-08-22 07:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b68b126a2200ed303184ce386ed1ebba SHA-1: bb678030f6e54c6d13ca97749e7da71c2e0021a5 SHA-256: 9921ccff93386e1511f3dd7e2b80b9fc0cb076137b6d4307d5b66c9ceeb1c1ac
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=best+default+ringtone'. Additionally, it exhibits a PDF link farm, with many links pointing to Shopify domains, likely as a way to obscure the true malicious destination. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be intended to trick the user into believing they need a password to access content, which is a common tactic for delivering malware.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=best+default+ringtone
    • http://neboru.marcushenriksson.com/uploads/1/3/1/6/131606289/futataf.pdf
    • http://files.mistyhollowfarm.net/uploads/1/3/1/4/131407424/tijemipir-sijupor-kafumodapi.pdf
    • http://files.gbyws.org/uploads/1/3/1/4/131483019/paludizixi-pazibokadelok-xovubonavegazuz-nobuxudisapefod.pdf
    • http://files.bloomingfulbirths.co.uk/uploads/1/3/0/7/130776602/6398f.pdf
    • http://files.etotdelaware.net/uploads/1/3/1/8/131860787/89aa3.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/pokemon_fire_red_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/makaxuvimerapiwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80463449019.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/lawomado.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/95167822872.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/nomijuxesiriz.pdf
    • https://cdn.shopify.com/s/files/1/0435/0921/9492/files/2693473837.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/70551718862.pdf
    • https://cdn.shopify.com/s/files/1/0430/5141/7751/files/tusavufiralefep.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/76158351897.pdf
    • https://cdn.shopify.com/s/files/1/0437/7968/6549/files/karya_tulis_ilmiah_tentang_bahaya_merokok_dikalangan_pelajar.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069d9.bin
174bb91283f5ff20af9ff9ddd8540195a261225a2cfeb3ffe6276c9bf02bc1a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x69D9 5008 bytes
font_01_sfnt_off00007ae6.bin
93ddb4a5815439db3207ea8e18fda94f6f6dc126ee9bd863534684bb360fc0ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE6 10284 bytes
font_02_sfnt_off00009e1a.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1A 4324 bytes