Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dba8da176a16f0a…

MALICIOUS

PDF

44.5 KB Created: 2020-08-31 06:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70f8aadf5b5a75413946d6ce7386d284 SHA-1: f6b753ee7c390c0d92ffcef18ef2c7ce6415c00c SHA-256: 7dba8da176a16f0addcab1a9ad0c0e0528e309c13c309098fbaf9f2aa4a3fbbc
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=traktor+dj+software+free'. This indicates the document is designed to lure users to a malicious site, likely for malware distribution. The presence of a large number of external PDF links, many pointing to benign Shopify domains, suggests a potential SEO poisoning or link farm tactic to improve search engine ranking for malicious content. The document body contains garbled text but includes the malicious URL, reinforcing the attack pattern.

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.cc/wix?keyword=traktor+dj+software+free
    • https://cdn.shopify.com/s/files/1/0431/2665/3077/files/auditing_and_assurance_services_in_australia_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/6265/7177/files/princess_bedtime_stories_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0464/9487/5800/files/42123878920.pdf
    • https://static.usrfiles.com/ugd/cfa91a_62cfe244a5a3485d9f948b29bec20a9d.pdf
    • https://static.usrfiles.com/ugd/c75f60_83f7f40534374a4e9ba82b1bfd072561.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/apologize_song_by_one_republic.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/ganobogotezabalobolivepet.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_75853931a081441985fa2150819156fc.pdf
    • https://static.usrfiles.com/ugd/9757e7_0100e28f87d94c37b5806d962b110aa4.pdf
    • https://static.usrfiles.com/ugd/60933b_650f5bb91e82409c8db4c3463469d8ab.pdf
    • https://static.usrfiles.com/ugd/71fd01_ec0db028daa348c0b08d505087f74918.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_off00006861.bin
a0dbe9508ba8f4037f1084c2a3eae78bb6911afef1ecee9fecb0af93e003c147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6861 5052 bytes
font_01_sfnt_off000079bc.bin
78ddce54cb8d9572a2ce93977c7c651c79485ef70a4048661271c4f86983dc59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79BC 14184 bytes

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