Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f788ecc60bb01a4…

MALICIOUS

PDF

39.7 KB Created: 2020-08-17 02:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c7787c4af220bb64057ed978915fbd7 SHA-1: 13b5b0c8f7fa17e5a03282581157ef7ff505a7da SHA-256: 2f788ecc60bb01a4655cd3dc7809e53e40b4c176a2934bc0101e360c2088304b
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though garbled, contains the same URL, suggesting a lure to a malicious site. The presence of numerous PDF links indicates a link farm SEO tactic, likely to obscure the true malicious destination. 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/pify?keyword=abcd+movie+songs+free++pagalworld.+com
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdf
    • http://files.ifluidics.com/uploads/1/3/1/4/131453253/82ff5498.pdf
    • http://files.np4yaxham.com/uploads/1/3/2/6/132695575/5cdfd9c1c.pdf
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/24506514372.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/planas_de_vocales_para_imprimir.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/81366622992.pdf
    • https://cdn.shopify.com/s/files/1/0433/0822/0574/files/83477981782.pdf
    • https://cdn.shopify.com/s/files/1/0436/2806/9017/files/english_communicative_literature_reader_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/33986021850.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/31840705254.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/bludgeon_brothers_theme.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/54333944436.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_off00005a6d.bin
5374c18bd2971de0d28c62b2563968baf84e538a0feba931e67eb51d4064047d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6D 5788 bytes
font_01_sfnt_off00006e17.bin
6544e7b22ebdd67de2bb8c02d0d533d976b14ef7082286cdce0181d04b089a4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E17 10540 bytes

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