Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb50e6dc215fd24…

MALICIOUS

PDF

41.5 KB Created: 2020-08-08 08:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80111c74770d4c34e363792ea5a0ad15 SHA-1: 46a07bc0393503e625665291c5dc66cd0eeabcb5 SHA-256: bbb50e6dc215fd241a2d80b9e3842773dc70ca7418b15b779e7df80d275f927b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'cpt manual professional edition 2019' and the malicious URL, suggesting a lure. The PDF also contains a large number of external links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to obscure malicious destinations.

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/wb?keyword=cpt%20manual%20professional%20edition%202019
    • http://files.carolinapowerlifting.com/uploads/1/3/1/6/131606393/3af028.pdf
    • http://files.kcsteachlearn.com/uploads/1/3/0/7/130776447/wexewadeferesutok.pdf
    • http://wonigufat.journeytomichelin.com/uploads/1/3/2/6/132695278/3643111.pdf
    • http://xajivazi.thesportsmansclassic.com/uploads/1/3/1/4/131482976/sufofasenudibudubuxu.pdf
    • http://wixufopu.behaviouralsciencesunit.org/uploads/1/3/1/3/131380485/sigozirugi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/smith_and_wesson_469.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/jigetowivuxesejogowora.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/laboratory_techniques_in_plant_bacteriology.pdf
    • https://cdn.shopify.com/s/files/1/0431/4339/7525/files/beachbody_21_day_fix_extreme_meal_plan.pdf
    • https://cdn.shopify.com/s/files/1/0428/2066/5510/files/bella_ciao_piano_sheet_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/analytical_report.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/94218125265.pdf
    • https://cdn.shopify.com/s/files/1/0436/8862/4283/files/kikolijerigofiximob.pdf
    • https://cdn.shopify.com/s/files/1/0428/5648/0935/files/rezavazoxubidojimos.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/22385141328.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_off000061ff.bin
5146b70fccc8b73a600805c5eba1b304e9a400d58fceb2bf22189b286eb79d0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x61FF 5572 bytes
font_01_sfnt_off000074d5.bin
850a2df517e5d7a5cea4c43336885f9e5a85ca01d3c9e655a987bcb479741d6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D5 10680 bytes