Malicious PDF — malware analysis report

Static analysis result for SHA-256 202a983a91398534…

MALICIOUS

PDF

67.6 KB Created: 2020-07-29 20:39:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77d9b1987ff1be07e577140ee6bc6681 SHA-1: 41c6dd7445af5d7178fded94d5a5ea382cec6839 SHA-256: 202a983a913985348c3c15a1ad23a23bf976a52a87213b2b41a53f8e558b4c46
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. The primary malicious link, 'https://ttraff.ru/pify?keyword=addiction+recovery+books+pdf', is designed to redirect users to potentially harmful content, masquerading as 'addiction recovery books'. The document body, though heavily obfuscated, contains text related to 'addiction recovery books pdf' and the wkhtmltopdf application, suggesting a lure to attract users to click on the malicious links.

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/pify?keyword=addiction+recovery+books+pdf
    • http://files.fmrcmembers.org/uploads/1/3/0/8/130813988/f667beb5.pdf
    • http://files.saintjosephsculturalcenter.org/uploads/1/3/1/3/131384113/kugon_pisetisaxazibum_vavete_kujop.pdf
    • http://files.faulknerproducerservices.com/uploads/1/3/2/8/132814898/lamowibuwak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11411440246.pdf
    • https://cdn.shopify.com/s/files/1/0430/0505/1029/files/32153870334.pdf
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/bozenazivoxanowivedan.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/9937478494.pdf
    • https://cdn.shopify.com/s/files/1/0440/0673/6037/files/536332269.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/soxenererubopixagitij.pdf
    • https://cdn.shopify.com/s/files/1/0429/2457/2835/files/niniwuxezudatariz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/28543602445.pdf
    • https://cdn.shopify.com/s/files/1/0432/7197/9172/files/50738804738.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/japidim.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_off0000c0ff.bin
8ea666ba848b0a6b4fb286dbce6211ab03be29cd0c2fca6fffa71f1abb0bd726		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0FF 5052 bytes
font_01_sfnt_off0000d23d.bin
1203f783278a28a4fd8c2b7956fd18e9e680c8deb8fb404befe207d62758cfd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD23D 15128 bytes

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