Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8f2b4c86b1972ca…

MALICIOUS

PDF

59.7 KB Created: 2020-08-19 00:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66b3cd1d06391b5af061c264afffe1d3 SHA-1: 3da4db9d72d767faab8f8d1387335478a1638f42 SHA-256: a8f2b4c86b1972ca5305a420c8d40a51df64c60222dc69bc5ec8feb13bd54bc8
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to ttraff.cc. The document body, though heavily obfuscated, contains text related to 'sbi cheque deposit slip excel format' and the malicious URL, suggesting a social engineering lure. The presence of numerous Shopify-hosted PDF links further indicates a link farm SEO tactic to attract victims. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=sbi+cheque+deposit+slip+excel+format
    • http://files.garryportugal.com/uploads/1/3/0/7/130775707/1344882.pdf
    • http://files.thequirkyquiller.com/uploads/1/3/1/3/131398605/powibibof-puzalexuxi.pdf
    • http://files.natsumisawada.com/uploads/1/3/1/4/131407029/sulegosew-vesin-nezupid-kolepuluset.pdf
    • http://files.williamsranchdoodles.com/uploads/1/3/1/4/131454501/141f4.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/17806283316.pdf
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/diwosama.pdf
    • https://cdn.shopify.com/s/files/1/0437/8558/4801/files/10610598028.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/wujaxexuvenusaxudupel.pdf
    • https://cdn.shopify.com/s/files/1/0438/9457/1163/files/genetic_mutation_pogil_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0439/9818/3582/files/94910511321.pdf
    • https://cdn.shopify.com/s/files/1/0429/3653/3151/files/20413872051.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5764/files/black_wallpaper_1920x1080_hd.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c1b.bin
b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1B 2828 bytes
font_01_sfnt_off00009616.bin
1e9781d368bcfb98ded3c6981b6a515f0f9d0d394127d854b5b12c21675e896d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9616 5832 bytes
font_02_sfnt_off0000a9be.bin
b54e77a6f50823bdcf35a7eebf6824b703bb768dfbf3aae45bea4e21d01958e6
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9BE 10120 bytes
font_03_sfnt_off0000cca3.bin
5d72d630640305d452d914085fd6c65e0d8125198bed8028c282d44fd0327be8
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA3 16068 bytes