Malicious PDF — malware analysis report

Static analysis result for SHA-256 2185a76bce213c94…

MALICIOUS

PDF

41.6 KB Created: 2020-08-23 01:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9419cabef84ab5268f6a6691db985b5d SHA-1: 331c3e6a518e2c7e1f45b3a29564e44922a5fb64 SHA-256: 2185a76bce213c94d865c3cd987647d4e4cfa6d0dff747c5e953bc421033f5ad
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=ielts+semi+formal+letter+sample'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, including one hosted on cdn.shopify.com. The document body contains obfuscated text and the malicious URL, suggesting a lure to external 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.cc/pify?keyword=ielts+semi+formal+letter+sample
    • http://lupopam.mclennancostume.com/uploads/1/3/0/8/130814295/2b046ccd85db8f5.pdf
    • http://files.beurownreligion.com/uploads/1/3/1/6/131636995/d5bd90a1f9c9a91.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/bujivurumijepututigupobib.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/authorization_letter_word_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/62254484663.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/14749341242.pdf
    • https://cdn.shopify.com/s/files/1/0438/3493/3398/files/dukukodigajaletunibuxija.pdf
    • https://cdn.shopify.com/s/files/1/0432/5287/5424/files/73553749778.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/comment_apprendre_a_lire_l_arabe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/89087188928.pdf
    • https://cdn.shopify.com/s/files/1/0430/5721/7693/files/30604380978.pdf
    • https://cdn.shopify.com/s/files/1/0459/2012/5079/files/answerable_over_definition.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/
    • https://cdn.shopify.com/s/files/1/0430/5721/7693/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065e2.bin
576f070528ca416bfa8eb78c2c3cf09b3d411735cb02e7e47a9711b74a91d1eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 4984 bytes
font_01_sfnt_off000076bb.bin
5b36526b99204035c0e11bc662b08df69c6fae292da9a6789fc790cb55a604f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BB 10224 bytes

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