Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c55050d6ad76e8…

MALICIOUS

PDF

36.5 KB Created: 2020-06-13 14:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb9c410792c5f42d84653c98ceb31cf1 SHA-1: 5e1874354da08b96df296f0264a92ee19cb46517 SHA-256: 63c55050d6ad76e8265748911a497bf2b5c51aed62088fad89d7e6842ce2b92e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by an ML classifier and contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with 22 external PDF links, suggesting a coordinated effort to host or link to numerous documents. The presence of multiple unknown reputation URLs supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://weirdtoyfactory.com/uploads/1/3/0/2/130270804/130270804.html#ka%25C4%259F%25C4%25B1d%25C4%25B1n+tarih%25C3%25A7esi+k%25C4%25B1saca
    • http://jewelrybymoshe.com/uploads/1/3/0/6/130639915/vafirefudisa.pdf
    • http://gruptrip.com/uploads/1/3/0/4/130477252/savetozoluwetos.pdf
    • http://laureneliseskates.com/uploads/1/3/0/6/130620942/743821.pdf
    • http://squeakyqueens.net/uploads/1/3/0/7/130740363/texanemibugom.pdf
    • http://leahjoyandsaintpatrick.com/uploads/1/3/0/2/130270781/5753994.pdf
    • http://ecuriebarnton.com/uploads/1/3/0/7/130739260/7088533.pdf
    • http://rcdesigns-online.net/uploads/1/3/1/4/131407890/wubagixij-vakazigaj-kabemesovixifi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://tovotuwag.files.wordpress.com/2020/06/32585842232.pdf
    • https://wuwamufajo.files.wordpress.com/2020/06/35816778609.pdf
    • https://xinuzipoxelu.files.wordpress.com/2020/06/47690762183.pdf
    • https://dinipexus.files.wordpress.com/2020/06/223205048.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061be.bin
80b661dde3b10891825eb296d0eda42904cf31c2bed6f65ca9e2109eedd56598		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BE 11216 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.