Malicious PDF — malware analysis report

Static analysis result for SHA-256 946c8a59f2734283…

MALICIOUS

PDF

35.3 KB Created: 2020-09-17 02:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1b44c9217fc7ae0403afd69a8526de6 SHA-1: 386b5e4f9ad67325f6939f0098041487b9bfffba SHA-256: 946c8a59f273428324fef32bfefe25a4abd3e4b5a186d3a96dda8e95136aad5f
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic identifying a malicious redirector link. The document body, though heavily obfuscated, contains a URL that appears to be a search result lure, directing users to click on it. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution.

Heuristics 4

  • 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.
  • 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.link/wix?keyword=human+dimension+and+interior+space+pdf+online
    • http://bavepunuw.puzzlepieceboutique.org/uploads/1/3/1/4/131483067/dujadibo.pdf
    • http://difodupej.jaxcars.net/uploads/1/3/1/4/131438379/9679d52b68.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/tiwupinimito.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/59758512601.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/gubez.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2998/files/vsphere_client_6._5_free_iso.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/nba_2k13_apk_obb.pdf
    • https://cdn.shopify.com/s/files/1/0455/5482/7429/files/digitisation_of_banking_and_other_financial_services.pdf
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/43554098522.pdf
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/driver_detective_8.2_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/bakery_algorithm_in_operating_system.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/97667133574.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_off00004ddb.bin
3c6e8179af2b8c3cba5bc13f2a2b306d6fd1759e55add9178051db7c57f1f7c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DDB 5260 bytes
font_01_sfnt_off00005fa3.bin
8a2feaaa00041e6cb3363fa4b53f61bb1847fa1d91e4c44622df2f3de686a536		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA3 9548 bytes

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