Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb1af6bf45c79e62…

MALICIOUS

PDF

44.9 KB Created: 2020-08-08 23:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 023d26a2d507ea68e1e4347d925b799d SHA-1: c76b1d091040ebfa2c555f15ccac5d843760d07c SHA-256: cb1af6bf45c79e627ab77cde67912d557c4a211baff50fc92e945536a7137223
150 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a redirector service. The primary malicious link directs users to 'ttraff.ru', which is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=water+prevention+control+pollution+act+1974+pdf
    • http://files.tutshillpreschool.org/uploads/1/3/0/8/130814205/tafiliri-wikug.pdf
    • http://files.tcrinnovations.com/uploads/1/3/0/7/130738484/fb5a54.pdf
    • http://files.phschoirs.org/uploads/1/3/0/7/130740221/pusujijebuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/2565/3160/files/the_amazing_spider_man_comics_fr.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/82393908404.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/51050873940.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/71316090690.pdf
    • https://cdn.shopify.com/s/files/1/0434/4895/9141/files/lenujeraxerajobawop.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/zuluzadiratobevedovabata.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/lokuremiva.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/zowodidabawawelemomu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9759/files/kotisutezigo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/bls_provider_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/rogunumetegege.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061ed.bin
f42cee2f871f98f28f969c3469265bbe1c90e8c812bcad51ecffa4fd17b38a02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61ED 5300 bytes
font_01_sfnt_off00007420.bin
71030ac8251420dfaca5f98ab87c28001c00817e7870a8b92b2050b4fbf83828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7420 10668 bytes
font_02_sfnt_off00009856.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9856 4324 bytes

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