Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfbbc1d6632ea5d1…

MALICIOUS

PDF

41.3 KB Created: 2020-08-21 21:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50d05e296d8298abc81d08d0769a7659 SHA-1: af7a95a36f060c599de16cfa0cd30fbb2ca6f7b1 SHA-256: bfbbc1d6632ea5d18342eb94de40e9e1655453635a4085ceb76524a92075beb8
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text related to 'Pharmaceutical sampling booth guidelines' and the malicious URL. This suggests a social engineering lure to trick the user into visiting a malicious site.

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=pharmaceutical+sampling+booth+guidelines
    • http://files.windowsmanchester.com/uploads/1/3/2/7/132740553/ac864241391d19.pdf
    • https://cdn.shopify.com/s/files/1/0429/5881/5398/files/entrepreneurial_finance_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3205/files/backout_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4229/files/joraxuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/pakiwosevokagalatum.pdf
    • https://cdn.shopify.com/s/files/1/0434/7212/6117/files/72546222702.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/51018057780.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/bombsquad_hackeado_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0115/9585/files/princeton_review_lsat_book.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_off00005a20.bin
02c5701a96f452fb6ad777892f77bef54f709860fe649502024befbbf1637a4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A20 5628 bytes
font_01_sfnt_off00006d05.bin
a5acf46797cab7b343d459b2c29c39193f02271c9f35b8bff1db252a28eaf874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D05 13844 bytes

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