Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86f9da5201ef589…

MALICIOUS

PDF

37.2 KB Created: 2020-08-24 00:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fce952366ca6ca84659eb975c33c658 SHA-1: 609d355ee87bc6bf87546e4db79834f08cf1f2ef SHA-256: a86f9da5201ef589d04d2205853cef0a40d67009251c4587238df81cd666f649
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'strategy guide' and includes the malicious URL. This suggests the PDF is designed to trick users into clicking the malicious link, likely to download further malware or lead to a phishing site. No scripts were extracted from this sample.

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.cc/pify?keyword=guns+n+glory+strategy+guide
    • http://fepajufo.kensington-windows.com/uploads/1/3/1/1/131164250/0136977cec.pdf
    • http://wiguwux.juiceboxfargo.com/uploads/1/3/1/6/131606183/2af402f76959.pdf
    • http://files.threesisterstravel.com/uploads/1/3/1/0/131070713/70705329298f6.pdf
    • http://files.whsnewschool.com/uploads/1/3/0/8/130874501/6556945.pdf
    • http://kovexa.mamayeva.org/uploads/1/3/0/8/130874113/patex.pdf
    • https://cdn.shopify.com/s/files/1/0434/4253/6604/files/gujarati_calendar_2020_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/2857/6416/files/xazawexuwadege.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15906675896.pdf
    • https://cdn.shopify.com/s/files/1/0441/1791/7848/files/breastfeeding_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0432/4740/3168/files/67188312791.pdf
    • https://cdn.shopify.com/s/files/1/0434/0793/3603/files/fatativaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/tamumalal.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/cardiogenic_shock_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/8819/1394/files/sciatic_nerve_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/13828303063.pdf
    • https://cdn.shopify.com/s/files/1/0462/0232/3094/files/nitukilirowoloxaziloru.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_off00005404.bin
6d26e0dc223c836adac8c11e72665eb0b330aa42f77880ff73948de6ef523d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5404 5124 bytes
font_01_sfnt_off00006589.bin
34b927598b0d79191709ee8fe3c56a5cf17af576c31683e3c859f82ef8fcc0ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6589 9904 bytes

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