Malicious PDF — malware analysis report

Static analysis result for SHA-256 95acc53f1db71530…

MALICIOUS

PDF

56.0 KB Created: 2020-08-15 16:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04c262e2fd455f45720dba59907e8dcb SHA-1: 0d6702bfbed96da0fe26a16ff67c46956cabc3d6 SHA-256: 95acc53f1db71530654a9468cb60ab66e88b3d4ab80267587ec9dc990c8f4e09
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/wb?keyword=tc%20application%20in%20marathi%20pdf. The document body, though heavily obfuscated, also contains this URL, suggesting it is the intended lure. The presence of numerous external PDF links, many hosted on cdn.shopify.com, indicates a link farm strategy to potentially obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wb?keyword=tc%20application%20in%20marathi%20pdf
    • http://widafame.hunsletcarr.co.uk/uploads/1/3/0/7/130740496/3695621.pdf
    • http://files.mcclainmatthewsinsurance.com/uploads/1/3/1/0/131070207/1b4560553d4229.pdf
    • http://tubunir.kcactf5.org/uploads/1/3/2/8/132815002/xexiraredixet.pdf
    • http://files.theredleafpractice.com/uploads/1/3/2/8/132815220/nonozunajabegubum.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8164/files/talolipezurebize.pdf
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/55779759166.pdf
    • https://cdn.shopify.com/s/files/1/0437/1991/7717/files/55873838839.pdf
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/android_one_android_pie_update.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/woxilobonitonuwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1986/files/dadesojujufolo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8366/8392/files/faregarowekap.pdf
    • https://cdn.shopify.com/s/files/1/0429/1667/5740/files/muwemikomevow.pdf
    • https://cdn.shopify.com/s/files/1/0429/0904/0803/files/44541816202.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_off000092e1.bin
b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92E1 2828 bytes
font_01_sfnt_off00009cdc.bin
d53bbd1073cb9b1a8da845740a8e4ed0442d6137a279531a4f18e1ef439bbecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CDC 5164 bytes
font_02_sfnt_off0000ae31.bin
fc2106f9ad3b7239a4e549cb9cd8549d1aa22926b54a6752dc6db1225d3c0913		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE31 10104 bytes

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