Malicious PDF — malware analysis report

Static analysis result for SHA-256 94b9f39cd1ca3a03…

MALICIOUS

PDF

41.2 KB Created: 2020-09-06 12:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b6f1fc99d888a4753594a4cf8d009b2 SHA-1: 713253456df57d235fee7e5216a1b39f195c9938 SHA-256: 94b9f39cd1ca3a034dc946a4ffac0ae2b6199c664fe014dc409655feeea7f0d3
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered this finding. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The primary IOC is the malicious redirector URL.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=2018+chevy+malibu+manual+mode
    • https://static.usrfiles.com/ugd/b8c837_0456f83b53964426a41325bac41d8f95.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad78fa24dd2d46dcaa99271bdc585643.pdf
    • https://static.usrfiles.com/ugd/b8c837_c265cd2fa5f0446194ee900fe6a96c6b.pdf
    • https://static.usrfiles.com/ugd/d55797_f9994fb2198d43aaa7061b73becb7fe6.pdf
    • https://cdn.shopify.com/s/files/1/0463/2736/5789/files/adeles_laughing_song_sheet_music_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_685c5de96c4c4fb7b9e312da8da0a627.pdf
    • https://static.usrfiles.com/ugd/0dd040_0019c864ffbd4995b7088734cfb07632.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/21089889359.pdf
    • https://cdn.shopify.com/s/files/1/0434/4755/0119/files/tecumseh_carb_adjustments.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/creeping_death_2_meadows.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6231/files/retorika_masining_na_pagpapahayag.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_off000060d2.bin
67a00fd032f437e41b042ef8f09fad3ec5613492fc8d29aadbe97e0db87e1396		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 5632 bytes
font_01_sfnt_off000073e1.bin
3d9607fb75d610a1a02664f9363e2f5a96c20b719dffcd69e13f1166c192328a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E1 10560 bytes

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