Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc34da93aeb5ec8…

MALICIOUS

PDF

49.9 KB Created: 2020-08-24 22:29:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f06832539ee9987fc698c64d5e73515 SHA-1: 37bd51014342fa6dbbbe0b6278b9df34bbf6bdc4 SHA-256: 4cc34da93aeb5ec876ab7f9866b7a9bcd767ec071b55f8f9b0bc1bb06cb47ac7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a prominent link that redirects to a malicious URL, masquerading as a download for 'bts world mod apk 1.0.2'. This is further supported by heuristics indicating a malicious redirector and a link farm. The ML classifier also strongly flagged this PDF as malicious. The primary intent appears to be directing the user to malicious infrastructure via a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=bts+world+mod+apk+1.+0.+2
    • http://lifov.microbesbymarco.com/uploads/1/3/2/8/132816066/3feecf4dd13f68.pdf
    • http://xagutuv.michellescreations.shop/uploads/1/3/1/6/131606624/tivekiwivi_losinabun.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/nokenoleziwajel.pdf
    • https://cdn.shopify.com/s/files/1/0431/4044/8410/files/biomass_gasifier_design.pdf
    • https://cdn.shopify.com/s/files/1/0447/7501/4566/files/champions_league_matches.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/54326307102.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1493/files/income_elasticity_of_demand_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/0388/5206/files/xajiwagip.pdf
    • https://cdn.shopify.com/s/files/1/0438/0295/1842/files/blood_glucose_biosensor.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/81128320360.pdf
    • https://cdn.shopify.com/s/files/1/0443/1344/4508/files/bifipimexipifezufusipa.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006469.bin
379102226829f3bab3a3c763e92e857047a50d0750f2cd7a3c42e86eaecd7746		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6469 2912 bytes
font_01_sfnt_off00006ecd.bin
2a8770aa57e42ea11622c18c8a4a23f71f98bf582504fed1d7ff36f16cb3fef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECD 5668 bytes
font_02_sfnt_off0000821c.bin
3cf0bc0219f4adba6b21e171c7cc148c470d9f655190d4bd82634e6e840c1bea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x821C 10412 bytes
font_03_sfnt_off0000a5ec.bin
df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5EC 16060 bytes

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