Malicious PDF — malware analysis report

Static analysis result for SHA-256 d12113e8960fff86…

MALICIOUS

PDF

36.5 KB Created: 2020-08-26 07:59:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50719fca37b887edafc49a1a3a3b3329 SHA-1: ff4bca5d1274d84db19932c3169aefeec3d634e2 SHA-256: d12113e8960fff866382d6f8265996fe103c20d6a8f3c79a1a2f1af251f87c8e
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, likely intended to trick the user into downloading malware. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. The presence of a "download" button lure further supports the social engineering aspect of this attack. The document body contains the malicious URL and a benign-looking file name, suggesting a lure for a fake download.

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.cc/pify?keyword=zelda%2527s+lullaby+mp3+download
    • http://files.melissamasonphotography.com/uploads/1/3/1/6/131606174/pimefivanat-bobazalajo-wemilifes.pdf
    • http://files.jackmcgrawapps.com/uploads/1/3/2/6/132683140/pevugesebuwu-vasun.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/kajijusapokoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/48521199422.pdf
    • https://cdn.shopify.com/s/files/1/0432/2227/0114/files/design_and_construction_of_automatic_voltage_regulator.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/freddie_mac_home_possible_advantage_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/zavolapizutapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6633/5138/files/dream_catcher_original_song_320kbps.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/25175711596.pdf
    • https://cdn.shopify.com/s/files/1/0430/7304/4634/files/rifumokidotewi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5024/5028/files/wawuriboposabimeko.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_off00004df9.bin
31723519424b5ee2c0174be5e3fe3000a7eadec1e134198c159373928a152935		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DF9 5496 bytes
font_01_sfnt_off000060b2.bin
7847b5b520a390e67bc8d6c63e39401ebf00010047ac423927ad74538d7077d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 10772 bytes

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