Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb99746f2c129ed…

MALICIOUS

PDF

38.0 KB Created: 2020-03-29 15:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0a0bd654e6a7f5be36c5e3ea8961390f SHA-1: 9f77f7730fa59b8d83c124579648048ce1f40410 SHA-256: ccb99746f2c129ed9c46c321066f19448c2f7bfa19922255556a3cafbc27c8df
94 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to PDF files hosted on various domains. The primary link, http://74-123-76-25.mgwnet.com/uploads/1/3/0/5/130590613/130590613.html#18%2F20+as+a+decimal, suggests a lure related to a mathematical problem. The PDF_SEO_LINK_FARM heuristic indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to distribute malicious payloads through numerous redirectors. The ML classifier strongly supports the malicious nature of this PDF.

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://74-123-76-25.mgwnet.com/uploads/1/3/0/5/130590613/130590613.html#18%2F20+as+a+decimal
    • http://splashmaster.org/uploads/1/3/0/3/130313557/nemamapitubutuj.pdf
    • http://woodyshandyservices.com/uploads/1/3/0/4/130476089/30aeeee4db61cc.pdf
    • http://merakihandmades.com/uploads/1/3/0/4/130476740/fopumev.pdf
    • http://lionsportsinc.com/uploads/1/3/0/6/130640200/fa1368e416e9.pdf
    • http://beautifulthingsbirth.com/uploads/1/3/0/4/130435701/vobujuredewaxa-rodido.pdf
    • http://royalglossbrat.com/uploads/1/3/0/7/130775222/verufawel-legokav.pdf
    • http://thetrailyouth.com/uploads/1/3/0/5/130588982/jujujak.pdf
    • http://vegancenter.net/uploads/1/3/0/5/130590186/93eccf9cfa9.pdf
    • http://elementcontractors.net/uploads/1/3/0/8/130813848/8026120.pdf
    • http://clutchanddrive.com/uploads/1/3/0/2/130272083/8996795.pdf
    • http://pinkblossombrows.com/uploads/1/3/0/6/130640144/romokemaranuz.pdf
    • http://tgift.ca/uploads/1/3/1/3/131379643/9319585.pdf
    • http://njeventind.info/uploads/1/3/0/5/130588384/26cb0731420.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d89.bin
5bf0c8e019f2a687597d0e9097e729ed57e0669a2fb2951b7179aa1856fc5248		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D89 7644 bytes

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