Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e20627e185a1ee…

MALICIOUS

PDF

46.6 KB Created: 2020-08-24 02:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f9cf0fee89e8e77b06d7cb4098037ab SHA-1: 4fee8852b67a2c8f5ef8cd92f924fe7fa6829c85 SHA-256: f5e20627e185a1eee8b72b2bef58e9576485b0698a811296f587efcb8a33f872
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it acts as a malicious redirector, pointing to 'https://ttraff.cc/pify?keyword=absage+formulieren+englisch'. Additionally, it hosts a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains the same redirector URL and a phrase that translates to 'cancellation form English', likely serving as a lure.

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=absage+formulieren+englisch
    • http://files.sjbmusic.org/uploads/1/3/1/3/131383247/xomir_kuvorodo_xavogefopi.pdf
    • http://files.electricaltouch.com/uploads/1/3/0/7/130740458/xojadukivolixew.pdf
    • http://files.amblesidesanangelo.net/uploads/1/3/1/4/131438308/8af52ce688.pdf
    • http://files.mrsamystaley.com/uploads/1/3/1/4/131438509/5089745.pdf
    • https://cdn.shopify.com/s/files/1/0440/5559/3110/files/kinoxetumen.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3387/files/lagu_hanya_rindu_lirik_metrolagu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3974/2369/files/golajexajixel.pdf
    • https://cdn.shopify.com/s/files/1/0433/4184/0535/files/junin.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8244/files/merriam_webster_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0429/5258/9465/files/73485061053.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0919/files/outfit_falda_negra_larga_formal.pdf
    • https://cdn.shopify.com/s/files/1/0431/8242/4215/files/sheet_music_blank_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/4513/3207/files/properties_of_fresh_and_hardened_concrete_report.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_off00007897.bin
f6114f07c42a5fe40fedb13950fc81e2ba459017dccea32cba6c429ebc899705		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7897 5424 bytes
font_01_sfnt_off00008ad8.bin
aaae82d4ca754bc364e8b773cafe53237d3b909a651aeb400c55cf82797b2d00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD8 10808 bytes

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