Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca8f8bc73bcae0e…

MALICIOUS

PDF

44.6 KB Created: 2020-08-23 13:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44d32db17916b355fc1471310772fea0 SHA-1: 824567f8454bf4b43b4e0c0521517ebeb874c785 SHA-256: 9ca8f8bc73bcae0e1b38022820669d741b4d420def72bd7eeeac141c3eeb9d61
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=html+templates+for+online+shopping+website'. The document body, though partially corrupted, suggests a lure related to 'Html templates for online shopping website'. The presence of a large number of external PDF links, many pointing to Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination.

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/pify?keyword=html+templates+for+online+shopping+website
    • http://files.stthomasabecketchurch.co.uk/uploads/1/3/1/1/131163858/figonidiwazoxe.pdf
    • http://baropot.kevmol.com/uploads/1/3/1/8/131871592/jupitisolu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/5915898976.pdf
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/40050410399.pdf
    • https://cdn.shopify.com/s/files/1/0428/9085/4566/files/89977170470.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdf
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/introduction_to_financial_accounting_horngren.pdf
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/nososudumovezixovitatamib.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/lowes_com_rebate_center.pdf
    • https://cdn.shopify.com/s/files/1/0434/2471/0807/files/99583091527.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8244/files/jegexakoxosuxanibij.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_off00006fd2.bin
590e9b43f0c5e3bde487501f41f6392e58385e4243d4f51e4e892c32e42decb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD2 5508 bytes
font_01_sfnt_off0000826c.bin
ccc926a4b3cc6b1bfee3481c1d1d29480e1c0400bb8b74b0949fa2699b27feec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x826C 10288 bytes

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