Malicious PDF — malware analysis report

Static analysis result for SHA-256 8545fcf1676212ee…

MALICIOUS

PDF

40.5 KB Created: 2020-08-08 03:26:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56e9521efd80f60b5083543c28818bfc SHA-1: 44abc19bf49fc2bf0da41247d60282b233049eaf SHA-256: 8545fcf1676212eedaa0d3f2d4b7b59645ae89bb2cea43aa003f97076ae958e9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'https://ttraff.com/wb?keyword=volvo%20penta%20service%20manual%20pdf'. This suggests the document is designed to lead users to malicious sites through a series of redirects, likely for phishing or malware distribution.

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=volvo%20penta%20service%20manual%20pdf
    • http://files.phonerepaircolorado.com/uploads/1/3/0/7/130775009/2418fd04eb354.pdf
    • http://files.selfhealingsuperfoods.com/uploads/1/3/1/4/131407469/1605171.pdf
    • http://files.marzipan-media.com/uploads/1/3/1/8/131856184/7584706.pdf
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/25665907937.pdf
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/falaxozus.pdf
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/kumiwun.pdf
    • https://cdn.shopify.com/s/files/1/0432/3016/7203/files/tagokuwudupanepifokenure.pdf
    • https://cdn.shopify.com/s/files/1/0432/1004/7645/files/cephalopods_of_the_world_vol_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/zevodile.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/15065458136.pdf
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/80138439960.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/95838408783.pdf
    • https://cdn.shopify.com/s/files/1/0430/6177/2442/files/xipawexi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8161/3987/files/i_got_the_hook_up_cast.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1254/files/kodajalevinakakedod.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/95958894692.pdf
    • https://cdn.shopify.com/s/files/1/0449/0670/9159/files/2nd_grade_math_challenge_worksheets.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_off00006038.bin
6991f9a51e6e45ef27acf1cc969192648a850bb4b24b67f44751b77bcbd1e350		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6038 5328 bytes
font_01_sfnt_off00007247.bin
b363d3af94cd1aee062b914bf5cec15a0b4fe3257c4b19e4fd8c45d0fd5b4dbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7247 10220 bytes

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