Malicious PDF — malware analysis report

Static analysis result for SHA-256 bccf9ad21a53f872…

MALICIOUS

PDF

46.1 KB Created: 2020-08-17 03:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e27c1123ed550bf0dd71708412b6f1d SHA-1: 29092bba6eb3e5df0b2ce01fa5d70c0641b002f2 SHA-256: bccf9ad21a53f872cb626f1a8b245a456d7aa9db3b5f96cff026a36f0715346f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external PDF links, many hosted on cdn.shopify.com. The document body, though partially corrupted, contains the same malicious URL. This suggests the primary intent is to redirect users to a malicious site, likely for phishing or malware delivery.

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=a+descriptive+essay+about+a+musical+performance
    • http://files.art-asap.org/uploads/1/3/0/7/130775249/7507150.pdf
    • http://xisupog.joebates.co.uk/uploads/1/3/2/7/132710780/7814028.pdf
    • http://files.baljagat.org/uploads/1/3/0/8/130814466/9931923.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/48005398372.pdf
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/jitolelomuzasixazewo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/japugugoliwuni.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/faxarufijipo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6870/0310/files/80414185671.pdf
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/the_old_man_and_the_sea_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/3748/1365/files/gamubotivogeguzusezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/38791247501.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/68958331551.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_off00006712.bin
328852bab0c588d7f1bff20f532818d704364e7cf7736d42cda9a5b6ae868796		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6712 5472 bytes
font_01_sfnt_off0000798e.bin
28927da5a0f9b97b9f9b5a2e278a20fe2825982ea2ca17c4582970320b7eacc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x798E 10360 bytes
font_02_sfnt_off00009cf4.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF4 4324 bytes

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