Malicious PDF — malware analysis report

Static analysis result for SHA-256 3070b2e13d0eeb7d…

MALICIOUS

PDF

39.3 KB Created: 2020-08-30 16:53:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f5ae4f4fa3cb762c412d78b9089f38e SHA-1: ec861edb6c36ad782e2f74de02876133b0094b31 SHA-256: 3070b2e13d0eeb7d2c8fd1af420983a239bd12a2f679c76679bf068216fca86b
120 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised with a search query for 'dead space apk obb offline'. This suggests a social engineering tactic to trick users into downloading potentially malicious content. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content.

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.cc/wix?keyword=dead+space+apk+++obb+offline
    • https://cdn.shopify.com/s/files/1/0435/8638/8123/files/durable_power_of_attorney_california_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/makebajubajamakifof.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/41516973109.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/wakaponomapokajorupopi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/diwelom.pdf
    • https://cdn.shopify.com/s/files/1/0430/5285/9543/files/8017165449.pdf
    • https://static.usrfiles.com/ugd/b8c837_60818dd9cbe14df4bd4bec0b9b691139.pdf
    • https://static.usrfiles.com/ugd/b8c837_af6b54b025fe416da52ec83a393ae1ad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58085676994.pdf
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/75841116098.pdf
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/93468149185.pdf
    • https://cdn.shopify.com/s/files/1/0438/8788/6488/files/49912840079.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_off00005b63.bin
18f0c23cb406914b74c3bc8b9743b9ec03963dc6325dbd27249c4e66174c61e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B63 5256 bytes
font_01_sfnt_off00006d59.bin
ff5a179fd8ce39dbda1507526ab326177acaefc429509cba713948c16153cd85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D59 10572 bytes

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