Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3fb868a618042f2…

MALICIOUS

PDF

33.5 KB Created: 2020-08-26 08:11:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6cc933ff7af9e0619795b78c7159e01 SHA-1: 1f962feb984a2b9d7921d5ab3709a7048ff1a2b6 SHA-256: b3fb868a618042f2eb3daec76b5aeb5378187abd82c292ade72d6ac7dde7e4a7
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, includes text related to 'The final countdown piano sheet music free pdf' and a URL that appears to be part of a link farm designed to manipulate search engine results. This suggests a social engineering attack aiming to drive traffic to malicious sites.

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.me/pify?keyword=the+final+countdown+piano+sheet+music+free+pdf
    • http://dobep.jamieluoto.com/uploads/1/3/0/8/130874104/daligoxivi-nisuke-fasefuvuxobojew.pdf
    • http://mupevexej.whidbeyislandnourishes.org/uploads/1/3/1/0/131070318/jalotubunega_noxol_bajikejivukus_girupesusazi.pdf
    • http://jifob.blairboosters.org/uploads/1/3/2/7/132712415/efa0d7c7484.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1273/files/vivosazomabamojevaduruza.pdf
    • https://cdn.shopify.com/s/files/1/0428/2764/5084/files/9955738505.pdf
    • https://cdn.shopify.com/s/files/1/0434/0137/9996/files/2345855841.pdf
    • https://cdn.shopify.com/s/files/1/0439/9074/5246/files/dimasorivug.pdf
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/38267661642.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/rixowomogosodoteva.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/9300299220.pdf
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/niwizinanalobutotixe.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/sujid.pdf
    • https://cdn.shopify.com/s/files/1/0434/6786/6278/files/37404957344.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_off0000428c.bin
05fba973293266adf486fac96d70db34c2c59a0fd89cc4259cb6feb5d15f970c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x428C 5436 bytes
font_01_sfnt_off000054e3.bin
d65336ee7d05ce23cc189d923358fd76c8f051c0db519b14840a64d6ba48948d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E3 10092 bytes

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