Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ab27465195cae4…

MALICIOUS

PDF

45.4 KB Created: 2020-08-05 04:38:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6599bd5bec194a7e62f1e773fefd6616 SHA-1: 47388dd2be82584dab6b177813ba234d9c39e568 SHA-256: 20ab27465195cae4bb4c1ae268be21bd11dc0338938ec58a879e25fa6ccb0254
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Arnold encyclopedia of modern bodybuilding pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=arnold+encyclopedia+of+modern+bodybuilding+pdf
    • http://files.jonathanacollura.com/uploads/1/3/1/3/131398533/miniwavo_lovawuxonedari.pdf
    • http://files.primary-eyecare-cornwall.co.uk/uploads/1/3/2/6/132695596/tofizasukusute.pdf
    • http://files.psorted.com/uploads/1/3/1/3/131398094/fafot.pdf
    • http://files.germangifthouse.com/uploads/1/3/1/4/131407668/9783010.pdf
    • https://cdn.shopify.com/s/files/1/0434/0721/2694/files/divekudojeluwexeru.pdf
    • https://cdn.shopify.com/s/files/1/0435/5247/3243/files/runomuxujetu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4797/7114/files/sipigijejesogif.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/bourbaki_a_secret_society_of_mathematicians.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/veluxowoxulawulipo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/mexewonelerozogima.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/fopikododejorogu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/acrobat_reader_download_for_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1285/files/rut-_50.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/49035321884.pdf
    • https://cdn.shopify.com/s/files/1/0428/8570/9987/files/zijanakurejoxadi.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/59876973859.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_off00007271.bin
112ee2ccac1bb1cc013a4fa6e7e698b5f360a8836808b788024e719e89d3fdd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7271 5528 bytes
font_01_sfnt_off00008535.bin
e906367d393c8a2ac918f2eabd110c05b4d53c9e60a196fe389af5c4d82f7fac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8535 10292 bytes

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