Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9cd1cd1fa9627e…

MALICIOUS

PDF

33.9 KB Created: 2020-05-15 14:26:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 7b70290a0ec917472f44eba7e8ae07ec SHA-1: edcc92c45c75939d1dd78cd79b1410ba77fce74b SHA-256: 7c9cd1cd1fa9627e67cb888c4b2863e533dffdc17db2f047fec7ccd123b6dbc0
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users to potentially harmful websites. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of numerous external URLs indicates a likely attempt to lead the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://rockymountainpixiebobrescue.com/uploads/1/3/0/5/130551019/130551019.html#activereports+pdf+export PDF link annotation
    • http://neatgoals.com/uploads/1/3/0/6/130604521/salipizuzip.pdfIn PDF document text
    • http://scalarealef1.com/uploads/1/3/0/5/130543351/5588904.pdfIn PDF document text
    • http://spookybfilms.com/uploads/1/3/0/2/130288768/479115.pdfIn PDF document text
    • http://powerupyourproductivityday.com/uploads/1/3/0/7/130739711/tibixutojifub_tijar.pdfIn PDF document text
    • http://blinglife5.com/uploads/1/3/0/8/130873961/fd15dee780.pdfIn PDF document text
    • http://potofcoffeepublishing.com/uploads/1/3/0/7/130738911/8866232.pdfIn PDF document text
    • http://amazinghousecleaning.com/uploads/1/3/0/2/130274370/1741260.pdfIn PDF document text
    • http://victorianmanorhc.org/uploads/1/3/1/4/131438110/lokerokajab.pdfIn PDF document text
    • http://maranathabtr.org/uploads/1/3/0/5/130539412/rupuzozebag.pdfIn PDF document text
    • http://proorganizerlindsay.com/uploads/1/3/1/4/131453867/0b0aa1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5843 11092 bytes
SHA-256: e2096fcd97c26e1506480a04510e651b4d74e78cf7a0b75814074a1007f72d9f