Malicious PDF — malware analysis report

Static analysis result for SHA-256 d461add861336fff…

MALICIOUS

PDF

32.9 KB Created: 2020-08-19 15:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ed09550cebd196cad8c303e3fb0eef4 SHA-1: dec176b5dd1fc3c9e794cc8b022eaa09c4b3971d SHA-256: d461add861336fff0f4fd2a1945ee312f79f0e5105a6404c1579f5f099c34a7f
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=jll+office+report+2018'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure related to a 'Jll office report 2018'. The primary attack pattern involves redirecting the user to malicious infrastructure via the embedded link.

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/pify?keyword=jll+office+report+2018
    • http://files.arizonastatecornholechampionships.com/uploads/1/3/1/4/131453221/ef6307bce0d4fa.pdf
    • http://files.nauiv.org/uploads/1/3/1/6/131606046/2406219.pdf
    • https://cdn.shopify.com/s/files/1/0436/8911/5801/files/befidijovofakiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/jenidixawamikom.pdf
    • https://cdn.shopify.com/s/files/1/0436/2013/9170/files/hip_fracture_classification.pdf
    • https://cdn.shopify.com/s/files/1/0428/9114/9475/files/introduction_to_mole_ratios_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/74797060561.pdf
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/rofanulorononeziselatibi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/35092555467.pdf
    • https://cdn.shopify.com/s/files/1/0437/2925/6602/files/sajaji.pdf
    • https://cdn.shopify.com/s/files/1/0429/8807/7209/files/53139616604.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70745323757.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/fundamentals_of_organometallic_catalysis.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_off00004507.bin
a9c4a4d8c59349620e4a8da4472735ea2be19ab4c1c9a4ede19f8bd59688f0b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4507 5128 bytes
font_01_sfnt_off000056a0.bin
c2be729b12ea9961a254e44156e53f318a59d72e52014ada460f30d9467b5783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A0 9520 bytes

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