Malicious PDF — malware analysis report

Static analysis result for SHA-256 0494cf11f19c55d4…

MALICIOUS

PDF

44.3 KB Created: 2020-06-25 06:49:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8130c8844033031356545f89370497c5 SHA-1: abd09cc40e066e0ac59ac2d8bb3233253788df12 SHA-256: 0494cf11f19c55d4a2a2670876fcf2a7b56f62849a0dffc75ae65237a25167ba
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a link farm, designed to direct users to download more malicious PDF files. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs further supports this assessment. The document's primary function appears to be acting as a lure to distribute further malicious content.

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://my-ez-life.com/uploads/1/3/2/7/132710750/132710750.html#online+gk+pdf+download
    • http://mail.andersoncovehouse.com/uploads/1/3/0/6/130621840/5019348.pdf
    • http://thedinosaurhouse.com/uploads/1/3/0/4/130483045/3616019b.pdf
    • http://zentrumamrita.ch/uploads/1/3/1/0/131070646/nalope.pdf
    • http://qcw4swcc.org/uploads/1/3/0/5/130539109/7bf025a8da3d37.pdf
    • http://revrx.ca/uploads/1/3/0/5/130539759/46461.pdf
    • http://mlhconsultancy.com/uploads/1/3/0/5/130542717/925879.pdf
    • http://james.roeske.com/uploads/1/3/1/0/131070334/pidowikutadi.pdf
    • http://guerssports.com/uploads/1/3/1/4/131483344/gusopuni.pdf
    • http://testasqhdandl.org/uploads/1/3/1/4/131453062/53c2bd017c91b.pdf
    • http://mw.undesirable.us/uploads/1/3/1/8/131856672/5066900.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000636d.bin
12aebea5489495e79989c22c0f4caeeb4a931b657458cfcb525ac78fcfbe50f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x636D 4824 bytes
font_01_sfnt_off00007401.bin
4b8306dc8a3369a7c64c93d90a9174158882d7993bbccc073004e14765c7042e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7401 10864 bytes
font_02_sfnt_off00009925.bin
da27a8773d8fd1197a871df769659fce7a3db5a2fe8400166fb8afb566f1066b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9925 3220 bytes

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