Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00f796a2a7434c2…

MALICIOUS

PDF

73.1 KB Created: 2020-08-28 12:38:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ae74825ab5dd8d253184a9455b51082 SHA-1: 4f45e4b4902b13303de5e7b3d2a0c0a0882688de SHA-256: d00f796a2a7434c2f3ba6847e64764e5100bf02c07f9cc338a55691b2870fb20
120 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting it is a lure for a book download. The primary malicious IOC is the redirector URL, which is likely used to host further malicious content.

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.club/pify?keyword=learning+python+o%2527reilly+6th+edition
    • http://files.yardmanpress.com/uploads/1/3/0/7/130739152/pasupamovosagaf.pdf
    • http://files.thomastalksonline.net/uploads/1/3/1/8/131856317/70d77a8965.pdf
    • http://files.artofyouphotography.com/uploads/1/3/0/7/130775823/2d93cd.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/tetivitorux.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/xisilipem.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/zemorifilaxodigewokepafe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6960/files/choricha_mamla_song_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0432/4366/7616/files/vte_prophylaxis_guidelines_2017_malaysia.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9871/files/how_to_open_report_inspector_in_netbeans.pdf
    • https://cdn.shopify.com/s/files/1/0462/3876/1120/files/924523436.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/55629706406.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/antivirus_free_cnet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2932/files/87525737100.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/2009_gary_fisher_piranha.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_off0000e22c.bin
eacd42bec300abd94338fbd55e1b91acc0d69c96a9d885e620edef7e93b427ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE22C 5276 bytes
font_01_sfnt_off0000f420.bin
2d9d4b8f176ca1719a0cba2a1da2547d50d821379ee233159948a11256d4ef00		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF420 10192 bytes

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