Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2e24d9cc91509e…

MALICIOUS

PDF

38.3 KB Created: 2020-08-23 09:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85999084e2379682758240547c5790d3 SHA-1: 924ef804a115f0a698152698de65e0c008605d1e SHA-256: 2f2e24d9cc91509edfca9c146ce1d733075bbfad6e5b99fbf134e65d959d1627
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating an attempt to lead the user to a harmful site. The document body, though heavily obfuscated, contains text related to 'Aspiration pneumonia treatment guideline ppt' and a URL that appears to be part of a redirection chain. The presence of multiple embedded URLs, many pointing to potentially compromised Shopify stores, further supports the malicious intent.

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=aspiration+pneumonia+treatment+guideline+ppt
    • http://files.jimihuard.net/uploads/1/3/1/4/131482968/xofezofulume.pdf
    • http://files.thevictorianpetal.com/uploads/1/3/0/8/130873804/e611ab54455843.pdf
    • http://files.cristinasbridalma.com/uploads/1/3/0/7/130740212/1439b347b963.pdf
    • http://files.paulmorellimusic.com/uploads/1/3/2/8/132814463/b8d62c8dd4bf45.pdf
    • http://files.cdrayofhope.com/uploads/1/3/0/8/130874493/3546584.pdf
    • https://cdn.shopify.com/s/files/1/0437/6903/6962/files/ejercicios_de_adjetivos_calificativos_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/90511267264.pdf
    • https://cdn.shopify.com/s/files/1/0434/3683/4981/files/buug_af_soomaali.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdf
    • https://cdn.shopify.com/s/files/1/0428/9092/0099/files/84176416793.pdf
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/famous_children_s_bedtime_stories_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/anticoagulation_in_hemodialysis.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_off00005a73.bin
f3542c93b5d987d79214620e096bbb3850830992c7cf5c12fe66d60009def83c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A73 5268 bytes
font_01_sfnt_off00006c3c.bin
f1a4ab66e4454cb13c4062ae7263cedeea97069a5282a67f011d60e70c26358b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3C 9416 bytes

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