Malicious PDF — malware analysis report

Static analysis result for SHA-256 206c3dc32d79f9b4…

MALICIOUS

PDF

45.3 KB Created: 2020-08-25 00:06:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bca39cebc2d85658cb226b0cf93355cc SHA-1: 00e71b1c760c94067d71d1c4b29248001a17d42f SHA-256: 206c3dc32d79f9b480d0d36bd0c1dedc66bb2c96caa1698433781f791c9c9645
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. Additionally, it contains a link farm with numerous external PDF links, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=difficult+music+trivia+questions+and+answers, which is likely used for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=difficult+music+trivia+questions+and+answers
    • http://files.gerrymitchellproductions.com/uploads/1/3/0/7/130740068/522c2fa.pdf
    • http://files.laurelschoolbrewsteronline.com/uploads/1/3/1/4/131406337/a5fca49caaad.pdf
    • http://zanibixi.chemisme.com/uploads/1/3/1/4/131452821/1758575.pdf
    • http://wesebado.katieanastas.com/uploads/1/3/1/8/131856543/bataxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/wpf_combobox_control_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/96995562683.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0336/files/beloved_with_chapters.pdf
    • https://cdn.shopify.com/s/files/1/0444/3347/3703/files/85486811567.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/87392374814.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/ramazafawisifotugevomug.pdf
    • https://cdn.shopify.com/s/files/1/0430/6403/3429/files/rulevopevo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/noluwix.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/jawoxozosev.pdf
    • https://cdn.shopify.com/s/files/1/0430/2484/2906/files/1st_gen_cummins_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0437/2014/7093/files/kalikasan_ng_akademikong_pagsulat.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_off00006dcc.bin
c17abb068242b05b086a95663dba54b6b9eb9f555880be3f60a14a8762c93f5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCC 5444 bytes
font_01_sfnt_off00008045.bin
ef34047a173fdfb47515e9c3f77e4451c9a3b61ddec0113fb2241d9c9df29bbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8045 11856 bytes

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