Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a12f2381403342e…

MALICIOUS

PDF

43.7 KB Created: 2020-08-09 13:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8fe0ec5b302cb88b45c0497ad793619 SHA-1: f4a5178ccfe2ed39e672949f3c73e903d8c53eae SHA-256: 9a12f2381403342e1623dbae517fef4b9cc180dce5b7fcdfdff9b9196f90682d
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This indicates the document is designed to redirect users to malicious content. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the final malicious destination. The document body, though heavily corrupted, contains fragments of what appears to be academic text and the URL for the malicious redirector, reinforcing the 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.cc/pify?keyword=brownian+motion+and+diffusion+freedman+pdf
    • http://files.jacesridgefarm.com/uploads/1/3/1/8/131856195/filavanipe_luwigozatezono_powutum_pizoloxefojasu.pdf
    • http://files.rarebirdediting.com/uploads/1/3/0/8/130813528/abc7fd.pdf
    • http://files.scoilnaomhiosafadare.com/uploads/1/3/0/7/130740097/2848705.pdf
    • http://files.printer-graphics.com/uploads/1/3/1/3/131380297/xidoliboluto.pdf
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/1751433815.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/alif_novel_complete_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1466/7934/files/kalod.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/isomorphism_linear_algebra.pdf
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/wolaleditiraba.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/83999947838.pdf
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/badevajirodafusoralaxix.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/70503791931.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/9684541091.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9221/files/kakug.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4496/files/bawebufebejinutiwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/wupigeboxotivodajub.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_off00006d0d.bin
7603579d0f2f9874477fa7d93c865db02585b8a6208f22f791787c9dc8619c5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0D 5296 bytes
font_01_sfnt_off00007f12.bin
7c086d610185e64bf34e875be33e839f591a65c9776ce9081b4caad3686b089e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F12 10128 bytes