Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa08f7da3cba5c24…

MALICIOUS

PDF

33.3 KB Created: 2020-08-26 00:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5277876ca2fa484523a18cebdf68e408 SHA-1: 77fba42a246adb3700143eb7b18da060db6efc1f SHA-256: aa08f7da3cba5c2409837f1ef2b62623df0b4e3878103237540e06ecb2b5993a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL, https://ttraff.ru/pify?keyword=the+college+panda%2527s+sat+writing%253A+advanced+guide+and+workbook+for+the+new+sat, is identified as a malicious redirector. This suggests the document is designed to trick users into clicking through to potentially harmful content, likely for SEO spam or to deliver further malware. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=the+college+panda%2527s+sat+writing%253A+advanced+guide+and+workbook+for+the+new+sat
    • http://feguduxi.realestate-stlucia.com/uploads/1/3/0/7/130739919/dajalumotipob-litonaxibo.pdf
    • http://files.bertguerralaw.com/uploads/1/3/1/4/131438062/variradev.pdf
    • http://files.bodyworksbykneadit.com/uploads/1/3/2/6/132681307/d8fd0.pdf
    • http://webemudik.canaanlandbordercollies.com/uploads/1/3/1/4/131453028/90c7e54328f0c.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/54212953721.pdf
    • https://cdn.shopify.com/s/files/1/0437/1772/2280/files/9392229354.pdf
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/33834206720.pdf
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/jukov.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/allegedly_book_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7733/files/just_already_yet_exercises_resueltos.pdf
    • https://cdn.shopify.com/s/files/1/0437/0222/3013/files/71036069945.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/15823384250.pdf
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/41478992435.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/juloj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7199/6053/files/79711857882.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_off000044c6.bin
7fb7f7b0812972657d30469d1886ce95ba51177793891fce2d4c7a348cc90d77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44C6 5808 bytes
font_01_sfnt_off0000589f.bin
82dc58400e8285bdea79b5628fbcae927a110af1ec98800093611c0b477e9deb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x589F 9068 bytes

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