Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c05bcad485d48da…

MALICIOUS

PDF

40.2 KB Created: 2020-08-18 14:05:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5890269d6f78f5406eb34d971cf35ef5 SHA-1: 71162a766cebacf1771a286d75371ea6e9dd64e9 SHA-256: 1c05bcad485d48dab0fda267359581650553329dad866ae4c599e6bda92509f3
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple embedded links, including one pointing to a known malicious redirector. The document body text and heuristics indicate a social engineering lure, specifically prompting the user to install a browser update or extension. This is a common tactic to trick users into downloading and executing malicious payloads or divulging credentials. The presence of numerous links, including a link farm, suggests an attempt to manipulate search engine results or distribute malicious content broadly.

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=google+chrome+for+win+7+ultimate
    • http://dememag.barnetselfstorage.com/uploads/1/3/1/4/131407148/fosufeferevapoluja.pdf
    • http://sufuwitet.danielnistico.net/uploads/1/3/1/0/131070722/mavijexosuzox-kebodor-vefimigiwalex-kutuf.pdf
    • http://files.exquisitekreations.com/uploads/1/3/2/3/132303229/4a316adb.pdf
    • http://files.functionalhealthcoach.com.au/uploads/1/3/2/6/132681836/2a4ad.pdf
    • http://files.wilkinsonbrian.com/uploads/1/3/0/7/130740252/linokisexi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7622/3129/files/mapipobagazale.pdf
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/guforidanifisi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/android_alarmmanager_one_time.pdf
    • https://cdn.shopify.com/s/files/1/0428/3550/9415/files/soxotolebako.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1507/files/78597538571.pdf
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/body_beast_workout_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/strengthsfinder_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/zazibogafazedenasuweme.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9607/files/dilevunukiwu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/mastering_physics.pdf
    • https://cdn.shopify.com/s/files/1/0435/7200/2974/files/28670924357.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/57804402975.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_off00005dc4.bin
83d65185913e3449b2f26baef0f79aec2c00bb25836b518572a3a21e659c9f7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC4 5320 bytes
font_01_sfnt_off00006fd7.bin
d9e39c644a6b33f5af02ca9d767180e00ae2c7c463f87c65766e754c90a18592		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD7 10636 bytes

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