Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cce052819c1975e…

MALICIOUS

PDF

37.1 KB Created: 2020-10-03 19:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4701346cd6f98242e06e64b5dbb5a4d7 SHA-1: 468c40b3c22d1ee3b2983cedc0aa37f4bd718ee4 SHA-256: 6cce052819c1975e1225ef6523852f082f14ceb0119d3faefa4f6085e9da808a
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs that redirect to malicious infrastructure, specifically a link related to 'crossword puzzle answers'. The ML classifier strongly indicates maliciousness, and the PDF structure is flagged for potential redirection. The primary malicious URL identified is https://ttraff.me/pify?keyword=14+the+constitution+crossword+puzzle+answers, which likely serves as a lure to a further malicious payload.

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/pify?keyword=14+the+constitution+crossword+puzzle+answers
    • https://site-1036695.mozfiles.com/files/1036695/megaxunez.pdf
    • https://site-1038602.mozfiles.com/files/1038602/29649572726.pdf
    • https://site-1036753.mozfiles.com/files/1036753/zogerepo.pdf
    • https://site-1041085.mozfiles.com/files/1041085/vibefigomezukebura.pdf
    • https://site-1036885.mozfiles.com/files/1036885/96603304384.pdf
    • https://site-1036973.mozfiles.com/files/1036973/55335981289.pdf
    • https://site-1038738.mozfiles.com/files/1038738/zozopokezuvabazajob.pdf
    • http://pagemasux.radcamps.com/uploads/1/3/1/3/131398064/jizibewu.pdf
    • http://files.towniebookscb.com/uploads/1/3/1/4/131453588/wotuza-pizavikufiz-damima-siwolupota.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053eb.bin
7e4437c0fd80ceb29419f31f91d2a2e9c528986e8ea0902c4f077a1fbc1ca454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53EB 5348 bytes
font_01_sfnt_off00006636.bin
228f61a87edd656038128eb43685dfb4d7d38b1fca7ec043af14eeaac23f2990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6636 9904 bytes

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