Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e182cb5ed9e074a…

MALICIOUS

PDF

45.9 KB Created: 2020-08-17 18:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 709ab4d6527ff2baa87a1559f5374c90 SHA-1: c65072f32eababc83bc48ae5a3a9d01c5e153928 SHA-256: 7e182cb5ed9e074a4cde604926e5d225d804c4bbc155276dbba861adeb88e276
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 30 generated links identified as part of an SEO link farm. One of these links, https://ttraff.cc/pify?keyword=cellulose+acetate+msds+pdf, is identified as a malicious redirector. The document body is heavily obfuscated and contains embedded URLs, further supporting the malicious nature of the file.

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=cellulose+acetate+msds+pdf
    • http://files.handmadebylouisa.com/uploads/1/3/0/7/130775827/25f7f89e987e0.pdf
    • http://ruzukopej.sonaesthetics.com/uploads/1/3/0/9/130969918/bubojolokugu.pdf
    • http://fogar.mainstreetlexington.org/uploads/1/3/1/8/131857334/9d17408dd448.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/zikotaxadiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7352/7203/files/40455765023.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/batexawa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/mudap.pdf
    • https://cdn.shopify.com/s/files/1/0433/3859/6511/files/91764180491.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0358/files/alienware_aurora_r8.pdf
    • https://cdn.shopify.com/s/files/1/0439/7203/4718/files/72657762668.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/popemezixaxej.pdf
    • https://cdn.shopify.com/s/files/1/0450/8984/9509/files/jamb_biology_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/73967774651.pdf
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/31481324945.pdf
    • https://cdn.shopify.com/s/files/1/0429/6399/2742/files/zelodabukotatuzeluteridu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7611/5863/files/uniformes_mais_bonitos_copa_2018.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_off000075b8.bin
05cffbfb74fdf2c0962d7b458164aea17654df3684852c84def63ab4213b347d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75B8 5108 bytes
font_01_sfnt_off00008708.bin
ce79eed4bea500e097487f04bccdd63aabf2b92d5acafed62261ec48a65cf7f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8708 10584 bytes

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