Malicious PDF — malware analysis report

Static analysis result for SHA-256 4772b8a71a569d0a…

MALICIOUS

PDF

33.2 KB Created: 2020-08-31 17:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a5028a908bc1215dc0fb06b85f974a1 SHA-1: f1dfea7b117feda5d48d3209b49303f1faedd47f SHA-256: 4772b8a71a569d0a2ab17d34e432340f6541025e734e435f86e5639738b2c8f8
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the heuristic 'PDF_SEO_LINK_FARM' indicating a mass external PDF link farm. One of these links, 'https://ttraff.ru/wix?keyword=indent+guides+visual+studio+2017', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a deliberate attempt to lure users to potentially harmful content.

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/wix?keyword=indent+guides+visual+studio+2017
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/free_aptitude_test.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3655/files/96416090352.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/the_major_candlestick_signals.pdf
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/baldur_s_gate_2_official_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/relalefepez.pdf
    • https://cdn.shopify.com/s/files/1/0429/6297/6921/files/63480151822.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2310/files/mapa_amsterdam_turismo.pdf
    • https://static.usrfiles.com/ugd/921909_b114b607b88d495fbc2c8d0ec3271129.pdf
    • https://static.usrfiles.com/ugd/15d534_ef4e12f52b5b4974abe83b8f1815d152.pdf
    • https://static.usrfiles.com/ugd/b8c837_547ca21da4f04dcaa56cfb3bb5a8d752.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_off000044ca.bin
edc51fc2bc8f3e4b01b9f5a8c54161dfddd5603a5ed1de6a1fb8a2a38f8b34b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44CA 5300 bytes
font_01_sfnt_off000056f7.bin
ae8ff449ae407adbae6555a93328823a16ee108ec7ed1f8799f111aed04b81ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F7 9716 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.