Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccdbe0d313b1b6fb…

MALICIOUS

PDF

50.8 KB Created: 2020-08-02 21:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 012699c3c706ca6cde081eaa95123f06 SHA-1: ab18c65f95b38a6b359bb90f6119fd99d998c337 SHA-256: ccdbe0d313b1b6fb56b5d054a4817e77d2f8d17e099fdfdf21017038b21c22b0
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes the text 'How to make a 8muse account' and the malicious URL, suggesting a phishing or scam lure. The presence of a link farm and a malicious redirector indicates a drive-by download or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=how+to+make+a+8muse+account
    • http://files.alcovitusa.com/uploads/1/3/0/9/130969403/1050e0ac341a2c5.pdf
    • http://files.quinnfarm.qc.ca/uploads/1/3/1/6/131637853/pures-tikute-gojujuzafi.pdf
    • http://files.stephaniebershyoga.com/uploads/1/3/1/3/131379371/1049198.pdf
    • http://files.spacegianthelmets.com/uploads/1/3/1/1/131164295/majapanifunomed_zurexusawot.pdf
    • http://files.indianamorganhorse.com/uploads/1/3/1/3/131398598/2150234.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/nakiribuso.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/wijomiro.pdf
    • https://cdn.shopify.com/s/files/1/0430/5525/1605/files/struct_inheritance_c.pdf
    • https://cdn.shopify.com/s/files/1/0437/5586/4213/files/16301335440.pdf
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/latolepexedilawuzow.pdf
    • https://cdn.shopify.com/s/files/1/0440/6283/4853/files/29426425230.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/mamitotizizefagetodu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2014/0191/files/pitman_probability_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/wados.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/pumitogegigirazoka.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/rebesilikotigab.pdf
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/sofupo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3765/files/tf2_brutal_bouffant.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007387.bin
17c6594e411f7db16d0dc10387b5534210fc2c2002d0bb0bbbdf6246f279c307
pdf-font-stream PDF embedded font (sfnt) at offset 0x7387 4960 bytes
font_01_sfnt_off0000845f.bin
c526c87b036f31cf4115021efdf48008ac95e97fac86be45a95de41074233a97
pdf-font-stream PDF embedded font (sfnt) at offset 0x845F 13680 bytes
font_02_sfnt_off0000afe1.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFE1 4324 bytes