Malicious PDF — malware analysis report

Static analysis result for SHA-256 986a2e4e76020d8f…

MALICIOUS

PDF

36.5 KB Created: 2020-08-28 01:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ea463f589bcb10f37000febef0e6f63 SHA-1: b6dd171cfecfd722e9da696d0c2a49e1dad225ad SHA-256: 986a2e4e76020d8f69e80e757bcbd06d69525cf0e77a1cdb624ec74387a996b8
120 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to accreditation documents. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attempt. No scripts were extracted from this sample.

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=akreditasi+snars+pdf
    • http://tuvilo.merizzi-psychotherapy.com/uploads/1/3/1/3/131398455/kofojar.pdf
    • http://files.stevemullins.org/uploads/1/3/0/8/130814535/xubebarik.pdf
    • https://cdn.shopify.com/s/files/1/0446/9224/2588/files/24278273599.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3493/files/72727229424.pdf
    • https://cdn.shopify.com/s/files/1/0430/5177/8202/files/fojelukanixaruziwed.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/long_beep_sound_effect.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2741/files/les_analyses_mdicales.pdf
    • https://cdn.shopify.com/s/files/1/0438/5649/4757/files/zofuxulexomejaze.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/80635082570.pdf
    • https://cdn.shopify.com/s/files/1/0439/5309/4811/files/kamawarabegega.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_off0000457d.bin
0028be97680b1d8b9ef839944ec51dfadb40e0fdcd7d092e9b5605023d8abc69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x457D 4736 bytes
font_01_sfnt_off00005595.bin
ff59f8ca73728285f02b9e21d6c53e07e8f2d0bb77bd83dfff9e6ed1c394a787		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5595 10092 bytes
font_02_sfnt_off000077ae.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77AE 4324 bytes

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