Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ff58c09e6d8530…

MALICIOUS

PDF

41.1 KB Created: 2020-08-15 22:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3567196d4456721621a38c0a0bd03225 SHA-1: 30d9abeaf49aa9f65a53ac01a7418ba550e002e5 SHA-256: 12ff58c09e6d853043b83b79a966830940f1a847da5a0eb7ad00b5c390f9796c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure at https://ttraff.com/pify?keyword=bhajan+mata+rani+ke++video. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on Shopify, suggesting a link farm or content stuffing technique. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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.com/pify?keyword=bhajan+mata+rani+ke++video
    • http://manite.carolinascentscandlecompany.com/uploads/1/3/2/7/132741099/1854810.pdf
    • http://kewal.stonehengetn.org/uploads/1/3/0/7/130775493/kosopofenew.pdf
    • http://files.villageofstaplehurst.com/uploads/1/3/0/7/130775997/636746f02e.pdf
    • http://pezeso.amazingmakeupyoulove.com/uploads/1/3/0/8/130874090/540043.pdf
    • http://poweju.graingercountytomatofestival.com/uploads/1/3/0/9/130969054/midifapiz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/32099817196.pdf
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/chemical_kinetics_clock_reaction_lab_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/8645/3663/files/snes_co_op_games.pdf
    • https://cdn.shopify.com/s/files/1/0431/3828/5725/files/nuwakijadupumav.pdf
    • https://cdn.shopify.com/s/files/1/0434/2739/7797/files/91660652894.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/jobab.pdf
    • https://cdn.shopify.com/s/files/1/0437/3164/8661/files/spinal_anesthesia.pdf
    • https://cdn.shopify.com/s/files/1/0439/1796/7528/files/guxakiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2511/2988/files/cash_flow_statement_proforma.pdf
    • https://cdn.shopify.com/s/files/1/0436/3082/1529/files/vumikixekolavep.pdf
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/rovezilosigijasul.pdf
    • https://cdn.shopify.com/s/files/1/0437/6834/8829/files/zubuwufixab.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a5f.bin
92b21a04cd85fec94b7813c566380c906ee70011ac438cac5a9644ee098fad98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5F 5104 bytes
font_01_sfnt_off00007b91.bin
804cc75f4c10124c79c3387a56fb3a04296ef70d38d79c5b6838ad7bf25692e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B91 11312 bytes

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