Malicious PDF — malware analysis report

Static analysis result for SHA-256 863d33b4344ce12f…

MALICIOUS

PDF

44.1 KB Created: 2020-07-31 13:38:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9568b1b43d95e7231799973699d6066 SHA-1: fa3e86b58bb0546d80a6861f640e7e3dcfc07209 SHA-256: 863d33b4344ce12f5b0a2f098aa29e0b352eeb1334ab4411f88cc21787e29ce6
150 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, with at least one pointing to known malicious redirector infrastructure (ttraff.cc). The document body, though heavily obfuscated, suggests a lure related to 'Oracle business intelligence applications pdf'. The presence of numerous external links, including a link farm, indicates a strong intent to redirect the user to potentially harmful sites, likely for phishing or malware delivery.

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.cc/pify?keyword=oracle+business+intelligence+applications+pdf
    • http://files.authorcaseybell.com/uploads/1/3/0/7/130775092/nutilunas.pdf
    • http://files.brittpixphotography.com/uploads/1/3/0/7/130775675/b97120f3d1b18c.pdf
    • http://files.supershiftery.net/uploads/1/3/1/4/131482864/forilugewi_dorukofafi_gifeparufojutiw_lofalajomejal.pdf
    • http://files.supershiftery
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/34231603306.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8992/files/wolabukumiwusilaru.pdf
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/mamemufevejozezota.pdf
    • https://cdn.shopify.com/s/files/1/0428/9767/0303/files/12755159488.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12584167006.pdf
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/6129010275.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/96270954807.pdf
    • https://cdn.shopify.com/s/files/1/0433/9099/2549/files/47315574806.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70354855800.pdf
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/rirutugadevopumi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5961/5646/files/kezikefiladesu.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_off00006c22.bin
89bb20db8c91f9352265ca41fd2d38a4a75ee620cdd66bf3677d9584b0f84334		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C22 5372 bytes
font_01_sfnt_off00007e66.bin
5e4d260936361a50cc7efba9d7c83a596f038c8acded0e2674e19a77e17f60f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E66 11372 bytes

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