Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d9c1eba534ad9eb…

MALICIOUS

PDF

42.0 KB Created: 2020-08-13 20:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a5fc510d0eb3cb8cf93f9468becb7ed SHA-1: 49cc2edd82e442758a7fc1b8fe8ba1b20503c08a SHA-256: 4d9c1eba534ad9eb025542eb2cac8fb5c27735840146df9f4d0f9e0df8450312
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=parental%20guidance%20required%20andy%20stanley%20pdf'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking PDF titles, suggesting a lure to a malicious site. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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.ru/wb?keyword=parental%20guidance%20required%20andy%20stanley%20pdf
    • http://tatox.constabilephotography.com/uploads/1/3/1/3/131384424/66edf734.pdf
    • http://kivatotug.azautogalleryllc.com/uploads/1/3/1/0/131070420/vapesuvasebalip-nuroxiwuzomimo-viduxagugeb.pdf
    • http://files.thisisacard.shop/uploads/1/3/2/6/132682295/susivirenetix-xalasojo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/biodynamic_farming.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/46966567237.pdf
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/93641948933.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/mewikalivar.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/73727203909.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/88376504580.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46946939033.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6275/files/angle_to_poiint.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/53616251087.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_off00006497.bin
a4ad7c475573496d015268b787242d9d2022da762bf22312642c4db01f072321		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6497 5552 bytes
font_01_sfnt_off0000777f.bin
f6623ecc8f421b75a811693e00935e8612512887b2c4d6f686376629c0c175a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777F 11036 bytes

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