Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32f9782a453ab11…

MALICIOUS

PDF

39.9 KB Created: 2020-08-20 09:07:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2208a062d5ea5d20a3a45cbe087f592 SHA-1: 1a2b0a56bab9f9c265f62e14c264dbf3bf4451e7 SHA-256: c32f9782a453ab11fc968a88236ff23b2c6b189ee24d5421a0fbd51f87df7fa7
130 Risk Score

Malware Insights

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

The PDF contains a lure for a fake "Archero iOS hack" and embeds a large number of external links, with one identified as a malicious redirector. The document body, though heavily corrupted, contains the malicious URL and appears to be generated by wkhtmltopdf. The presence of a "SE_DOWNLOAD_BUTTON" heuristic further supports a social engineering attack. The primary malicious URL is ttraff.ru, which redirects to a Shopify-hosted PDF.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=archero+ios+hack
    • http://files.tasselsandtrinkets.com/uploads/1/3/1/6/131606839/lebavigaboxefenogu.pdf
    • http://files.bbawakeblogs.com/uploads/1/3/1/4/131437268/66807.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/11759065657.pdf
    • https://cdn.shopify.com/s/files/1/0437/8030/9141/files/cinderella_3_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/sikh_ardas_in_punjabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/66791750126.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/gugukote.pdf
    • https://cdn.shopify.com/s/files/1/0430/0354/3715/files/daxateba.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/gugofosiselavekovimegin.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/92193871213.pdf
    • https://cdn.shopify.com/s/files/1/0432/7407/6315/files/sasefo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/72171589722.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/58463849544.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_off00005e6a.bin
37bf3cfc332c52996940133e61745febf99f626c77c2c047477ed5eb6a18a7c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6A 4908 bytes
font_01_sfnt_off00006f0d.bin
e65f55d41a1a5c59b13d17cfd363a14eaf87989f647abc1125341a6e6d1f7c77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0D 10580 bytes

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