Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c75cd3b7ac0f53f…

MALICIOUS

PDF

46.6 KB Created: 2020-08-08 23:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6474f9c16f2fd81ce9e52b5bf949e976 SHA-1: 447b7333930bd71af9878eb84dda077eeef0244d SHA-256: 3c75cd3b7ac0f53faf4538af362b8f9498cafbc482027216f44e75e6ac565eba
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, includes text related to a job application and references the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or distribution mechanism. The primary attack vector appears to be social engineering via a deceptive job application lure.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=casey+s+job+application+pdf
    • http://files.manxfestivalchorus.com/uploads/1/3/1/4/131438177/6181704.pdf
    • http://files.genesiscarconcepts.com/uploads/1/3/2/6/132681916/zeleb-renafezifok-xabilizutujaze.pdf
    • http://zazol.theprofbodyforum.org/uploads/1/3/1/4/131408899/tadudijemagire_daduvizapazazi_kipipujenir.pdf
    • http://files.ritosrepellant.com/uploads/1/3/0/8/130814192/bdebd7bb.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/japji_sahib_paath_in_punjabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/zapuku.pdf
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/jopogonivegemimarinevup.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2092/files/bose_wave_music_system_iii_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8403/7792/files/my_generation_limp_bizkit.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5197/files/pobuzagufi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdf
    • https://cdn.shopify.com/s/files/1/0439/1701/7243/files/satelo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/padewaposodutudunaliwuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/pewaza.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_off000069ff.bin
2ffded0bd3f2b5dfb67783261715782e4e725f3182ed084cd1d824da67012399
pdf-font-stream PDF embedded font (sfnt) at offset 0x69FF 5184 bytes
font_01_sfnt_off00007bbb.bin
a0346d417abf42afcb43f50d2e332ad3f67ecf39a4956d8714fe6fcc3d2ab176
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBB 10480 bytes
font_02_sfnt_off00009fa8.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA8 4324 bytes