Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fbc0f74fa54eb0…

MALICIOUS

PDF

38.7 KB Created: 2020-08-30 16:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ea40e8e2f7420b82fecd9e772df5735 SHA-1: 06b1e439067d5e0fc6ab3262aef9bebb75379e19 SHA-256: 22fbc0f74fa54eb073803bcc8f538ed0f769c4e68bde8a57b0d566630d0ffaee
120 Risk Score

Malware Insights

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

The PDF file contains a lure for a Marathi novel download, which is a common social engineering tactic. It embeds a link to `ttraff.ru`, identified as a malicious redirector, likely serving as a gateway to further malicious content. The PDF also contains a large number of links to `cdn.shopify.com`, which are likely part of an SEO link farm to improve search engine ranking for the malicious lure. No scripts were extracted from this sample.

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/wix?keyword=fakira+marathi+kadambari+pdf+free+download
    • https://cdn.shopify.com/s/files/1/0452/0253/8647/files/donemotufa.pdf
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/64905581075.pdf
    • https://cdn.shopify.com/s/files/1/0432/7620/6238/files/51931640926.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/romenitu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/poxidukafugunirudog.pdf
    • https://cdn.shopify.com/s/files/1/0429/3902/3526/files/21713474727.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/how_to_create_a_readme._md_file.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://cdn.shopify.com/s/files/1/0433/8273/5006/files/microsoft_access_2020_programming_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/nifavuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/3202/6008/files/avengers_3_trailer.pdf
    • https://cdn.shopify.com/s/files/1/0459/6999/7984/files/search_chrome_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/xajabinuzagigoduk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004eb9.bin
c1ce4ae8899ee04843d43f1944c716c4c13022e24f77d9beaa918e268026033d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB9 5352 bytes
font_01_sfnt_off000060d9.bin
fa98316bad0ee393e4244be63b1d230beb4724cf855be96ad4f2c87a5b302ae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D9 2140 bytes
font_02_sfnt_off00006ab2.bin
aa2a4e246ef8f7520a70ba31c6fe811193855dbfa556c9c1171790710b2e829c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB2 9780 bytes

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