Malicious PDF — malware analysis report

Static analysis result for SHA-256 483b59f66d975069…

MALICIOUS

PDF

42.3 KB Created: 2020-08-11 18:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af88810de786d3709d79b67e74e91444 SHA-1: 2825592de98cade9ca345dedc3e5b67306229d82 SHA-256: 483b59f66d975069b1c6a53c77601d2fd77b5a9734bb88afe882abe6e376d5bb
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect the user to malicious content. The presence of a link farm further supports a malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=nitrogen+fixation+by+lightning+pdf
    • http://files.brightondentalclinic.com/uploads/1/3/2/7/132712185/podazimorowok-fejodiju.pdf
    • http://files.whichq.net/uploads/1/3/1/3/131379356/gosabobabe_mupufaz.pdf
    • http://files.sherwingaje.com/uploads/1/3/0/7/130738657/e3f1f3d8.pdf
    • https://cdn.shopify.com/s/files/1/0437/4616/4897/files/pevudajufafemebe.pdf
    • https://cdn.shopify.com/s/files/1/0438/3870/1728/files/absolute_java_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/xeluwovixufi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/programming_language_pragmatics_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/34930297146.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/23555792939.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/amygdalite_traitement.pdf
    • https://cdn.shopify.com/s/files/1/0432/9265/5780/files/timadigasasibavuvi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/probability_questions_and_answers_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6796/4580/files/danon.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a57.bin
cb75ebee9f1a38e13a368b3fbe627129d7ba11b365d6fc97dc9342ee1da6f313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A57 5192 bytes
font_01_sfnt_off00006bfc.bin
5fefd8c569bf2532f5288c0f008e47c1b0df6bb9885a3c9226447bd8728272ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFC 10056 bytes
font_02_sfnt_off00008e47.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E47 4324 bytes

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