Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5acb8fdb59892ee…

MALICIOUS

PDF

43.6 KB Created: 2020-08-21 13:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47290523943271c79883962ba7d2c67f SHA-1: 5308dbc892762b9d2169e59a3767d8cf8320ef09 SHA-256: c5acb8fdb59892ee7953fd6bdf11c15d2f5b68b3c2bf6e7037f153b9e40f6c5e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=evernote++mac+10.+12'. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites. No scripts were extracted from this sample.

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=evernote++mac+10.+12
    • http://pijugej.nevadaschoolofdance.org/uploads/1/3/1/4/131453870/25378e3e.pdf
    • http://dodan.leoncharacteredu.com/uploads/1/3/1/3/131384429/kisokakuwum-jobatiwupepoz.pdf
    • http://files.nashvillebodyworks.com/uploads/1/3/1/4/131408103/4872958.pdf
    • http://files.chiclibellule.com/uploads/1/3/2/3/132302718/bobemigisadu.pdf
    • http://vovigog.riverglennkennels.com/uploads/1/3/1/4/131454215/nixezexirazezib.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/patofisiologi_bronkopneumonia.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/pajejapamiponos.pdf
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/alzheimer_s_disease_causes.pdf
    • https://cdn.shopify.com/s/files/1/0434/6583/4658/files/gazasumusupaposupamiteb.pdf
    • https://cdn.shopify.com/s/files/1/0434/8837/9032/files/seismic_reflection_survey.pdf
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/bergey_s_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2805/files/81719421312.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/pesinekujuvujosinidoduz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3952/1958/files/hypernym_and_hyponym_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0439/3045/2123/files/42817824466.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/70719928929.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_off00006e12.bin
c932f80061d7e67f74f0315d4bec55db3a97b2359efd56c3cacad778d2a839c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E12 5108 bytes
font_01_sfnt_off00007f63.bin
f3952eb7ec01e1cefe6a235cf699a68ff558b4462ff92ec6a1e139092ba78150		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F63 10100 bytes

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