Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec85db475d78458…

MALICIOUS

PDF

49.6 KB Created: 2020-08-19 13:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49842f10fdda1b777dfdc24dd8e8113f SHA-1: 9a5841bc6dec543ffe6683d18ff34747a37d8b49 SHA-256: 4ec85db475d78458a66df096aaacec3b51e7ba5f038379560707d171df6686b1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a keyword suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify, likely to distribute the malicious payload or for SEO manipulation. The primary attack vector appears to be social engineering via a deceptive link.

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.com/pify?keyword=breadcrumb+trail+app+android
    • http://files.spamitzvah.com/uploads/1/3/1/3/131384789/2268709.pdf
    • http://gikizeb.naturalbirthingjoy.com/uploads/1/3/2/6/132681513/zowebalufujiz.pdf
    • http://laxugij.paulinepetsel.com/uploads/1/3/1/4/131438500/widada_turevumakase.pdf
    • http://sirisojux.madisoncountycc.com/uploads/1/3/1/4/131437792/notowa.pdf
    • http://files.charlenegroome.com/uploads/1/3/1/4/131410299/pejubuko_nufaf_matew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/44614226474.pdf
    • https://cdn.shopify.com/s/files/1/0451/9510/0311/files/medical_certificate_form_42.pdf
    • https://cdn.shopify.com/s/files/1/0439/4713/1035/files/55347000841.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/xunuxasakuxelerovipazara.pdf
    • https://cdn.shopify.com/s/files/1/0438/0911/2226/files/83040519040.pdf
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/77859812956.pdf
    • https://cdn.shopify.com/s/files/1/0435/1331/5480/files/tebuziduke.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/tom_cruise_biography.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/10796470905.pdf
    • https://cdn.shopify.com/s/files/1/0436/5520/0918/files/vidupovevuvoduxilagexi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/vapawixaditivilalewomexew.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/
    • https://cdn.shopify.com/s/files/1/0451/9510/0311/files/medical_certificate_form_42

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008371.bin
7b123a4d55284e71e9a418f474dccb26b9fe85561876323e577e5ed943baed58
pdf-font-stream PDF embedded font (sfnt) at offset 0x8371 5232 bytes
font_01_sfnt_off00009512.bin
80029946f786e5e8006450d4e5d6735a7d88b257553e3d23d4576725fb520f22
pdf-font-stream PDF embedded font (sfnt) at offset 0x9512 10544 bytes