Malicious PDF — malware analysis report

Static analysis result for SHA-256 45fb70966575cfd1…

MALICIOUS

PDF

37.8 KB Created: 2020-07-12 23:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04db2bad1e2a88e47fffbbb406b817bc SHA-1: 222e4177dc1925e6842479685f9603f221ebf687 SHA-256: 45fb70966575cfd1f31c56f1b4b208895640befb4a9e322fe4bb4ed0c4cc6d7e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded links, indicating a link farm. The primary malicious URL identified is https://ttraff.com/wb?keyword=yamaha%20power%20amplifier%20p2500s%20manual. The document body contains garbled text, suggesting it is not intended for direct user consumption but rather to host these malicious links.

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/wb?keyword=yamaha%20power%20amplifier%20p2500s%20manual
    • http://files.mrsbscusd.com/uploads/1/3/1/4/131407155/zonutidigobi.pdf
    • http://files.mountainivy.org/uploads/1/3/1/3/131383383/8499704.pdf
    • http://files.konstantinvalchev.com/uploads/1/3/1/3/131384145/pejomaxodaxejin.pdf
    • http://files.kennedycounselling.com/uploads/1/3/2/6/132682335/1727826.pdf
    • http://files.communityoff-road.com/uploads/1/3/1/1/131164418/wapariwejak.pdf
    • http://files.zacharywarrenmusic.com/uploads/1/3/1/8/131871480/7576174.pdf
    • http://files.imagesbya2zphotography.com/uploads/1/3/1/4/131438329/sorulorenupixa_guriwap.pdf
    • https://luropatasoz.files.wor
    • https://luropatasoz.files.wordpress.com/2020/06/90037721548.pdf
    • https://leludibowen.files.wordpress.com/2020/06/ladilufakixekebulovonurip.pdf
    • https://mameloga.files.wordpress.com/2020/07/zesineziber.pdf
    • https://cdn.shopify.com/s/files/1/0433/6769/4501/files/lasuzisonexixixovukapug.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78683638278.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9590150980.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitadekekogog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0877/7637/files/livawoti.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/80341077433.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sekokejeninidifowabofu.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_off00005633.bin
6b9196b9307fcb9213957e1d9761f10ae53ed03e0380430097039d21dc57b3e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5633 5396 bytes
font_01_sfnt_off00006869.bin
8c31c11a41eb07ebf0bf996a170534709c58bb25fda921abd1ded00a55623c90
pdf-font-stream PDF embedded font (sfnt) at offset 0x6869 9712 bytes