Malicious PDF — malware analysis report

Static analysis result for SHA-256 98e2a1b61da550c5…

MALICIOUS

PDF

37.8 KB Created: 2020-08-18 17:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a45f8140057a3c961efc63d192318313 SHA-1: 63283d17bb0bd02c67d7e1db75a2042284f903ee SHA-256: 98e2a1b61da550c516c7bef620822f897850809d05c50356a8f653b61b5c8233
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm. The primary malicious URL, 'https://ttraff.cc/pify?keyword=a+jay+connection+song', is likely used to redirect users to a phishing or malware distribution site. The document body contains garbled text along with the malicious URL and other PDF links, indicating a potential attempt to obscure the malicious intent.

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=a+jay+connection+song
    • http://files.bullengarookadultriders.com/uploads/1/3/2/6/132681596/fomapofegaro-wopigadazodup-zevevamer-tirexilagenizo.pdf
    • http://files.shademotorkits.com/uploads/1/3/1/3/131384249/1476354.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/discord_bullet_points.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/somerurunem.pdf
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/55519865105.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/creative_process_in_entrepreneurship.pdf
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/41699000919.pdf
    • https://cdn.shopify.com/s/files/1/0434/5806/8633/files/82626703215.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1087/files/83383033124.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/wawub.pdf
    • https://cdn.shopify.com/s/files/1/0433/4105/4111/files/nitrogen_cycle_steps_in_order.pdf
    • https://cdn.shopify.com/s/files/1/0435/4100/4439/files/bridge_over_troubled_water_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/59314767044.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_off00004ac6.bin
3f0a88be2794bb0b312dcae439ee44a5ba1f60c7a734b7a76b60f957b28826a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC6 4796 bytes
font_01_sfnt_off00005b2e.bin
975ed4eea4a4910b935428d8f7ee82aef0a2cdb4e89fd1505b7489d766bccf0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2E 9724 bytes
font_02_sfnt_off00007c87.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C87 4324 bytes

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