Malicious PDF — malware analysis report

Static analysis result for SHA-256 af44808f4011d431…

MALICIOUS

PDF

37.5 KB Created: 2020-08-27 22:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baf1a8324750df384529dc0abe7f7c71 SHA-1: 47c5e767c83dd2cd254efcb3a3e809fc98b3e565 SHA-256: af44808f4011d4316b1b3aea47ada6cc0ccc0fc0b4b930750e5a9f7bb7d4e989
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 link farm. The embedded URLs, particularly the one pointing to 'ttraff.ru', are indicative of a phishing or malware distribution attempt. The ML classifier also strongly supported a malicious verdict. No scripts were extracted, but the sheer volume of outbound links suggests a content-luring or redirection strategy.

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.ru/pify?keyword=carlos+torija+de+diego+rental
    • http://xapuru.mysuidora.com/uploads/1/3/1/4/131437626/nonumodawizerafos.pdf
    • http://files.yonahayin.com/uploads/1/3/1/3/131384058/21cf269b2.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/rukatixusofiza.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/terilokipomuranixivire.pdf
    • https://cdn.shopify.com/s/files/1/0437/3276/2785/files/ansible_advanced_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/93112544102.pdf
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/30136272633.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/biharwap._in_bhojpuri_song.pdf
    • https://cdn.shopify.com/s/files/1/0462/0120/8985/files/kepo_buzzer_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pazutorigixasozesilax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/25668779603.pdf
    • https://cdn.shopify.com/s/files/1/0435/7508/3167/files/undead_touch_of_the_grave.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/bollywood_5._1_mkv_video.pdf
    • https://cdn.shopify.com/s/files/1/0457/5638/3396/files/aala_baburav_aata_dj_song.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_off00005453.bin
ec7212f19a2b4fa540c93832b7cb00363db83b008d8e7885c84c8a90559e7a44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5453 4976 bytes
font_01_sfnt_off0000654c.bin
0f5672708f8099d5551abd9a550ba14be16338d88524ac6dbb84b871ef1c79d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 11052 bytes

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