Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7c942803b1e0d7…

MALICIOUS

PDF

43.2 KB Created: 2020-08-07 01:17:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f6f537501147a7905c153136bc7da9f SHA-1: 7a68179fa188480019db90f0e7ca46ea47512aba SHA-256: 4d7c942803b1e0d740d5a0fee96831f72b2f34520ff5f619cff42d024cd7c0f7
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary attack vector is to trick users into clicking malicious links, likely leading to further compromise.

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.ru/pify?keyword=carbohidratos+de+absorcion+rapida+pdf
    • http://files.starpropertygroup.net/uploads/1/3/1/3/131381376/wimorodukobedumarar.pdf
    • http://files.ourlitkit.com/uploads/1/3/0/8/130814515/tedag-waluzuvesi-jubomegubafebe.pdf
    • http://pudole.alakaiheritage.org/uploads/1/3/1/4/131437736/88dd1.pdf
    • http://files.gsmtennisexperience.com/uploads/1/3/1/3/131397987/zejusiwitidi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9283/files/manolovusidowenesulu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/blm_manual_of_surveying_instructions_2009.pdf
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/risapo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/long_term_capital_gain_tax_rate_for_ay_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/gedebivawidalarujuku.pdf
    • https://cdn.shopify.com/s/files/1/0430/3041/3475/files/58742584142.pdf
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/chemical_reactor_analysis_and_design.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/da_form_2166-_9-_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/60932264022.pdf
    • https://cdn.shopify.com/s/files/1/0428/2512/1959/files/youtube_subscriber_tracker.pdf
    • https://cdn.shopify.com/s/files/1/0435/0446/8134/files/88819125029.pdf
    • https://cdn.shopify.com/s/files/1/0433/7729/5516/files/katisagu.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_off0000689b.bin
9454b55694a0dbd6caf7fabbe82c00ec8032e2f116c9af72ef8e6547dccf1fec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689B 5256 bytes
font_01_sfnt_off00007a6b.bin
aa26896ecf9120d944674b12862e498d0bed3a9ffda77a6cc15cdc057e321a5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6B 10928 bytes

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