Malicious PDF — malware analysis report

Static analysis result for SHA-256 2414df5b27bc6bdb…

MALICIOUS

PDF

104.9 KB Created: 2020-04-12 13:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 4189a72388300c16ce88488c7d350794 SHA-1: 8da42b70e0b69fee170cdd37fbe5d58f0fe78951 SHA-256: 2414df5b27bc6bdb59ac626c351535e9a4abb6b991ea7131f7a338bf0d229d83
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a significant number of external links, identified as a PDF SEO link farm. The primary heuristic indicates that the document contains a mass external PDF link farm, with the first URL pointing to http://emeraldvineyardestate.com/uploads/1/3/0/7/130739401/950cbf8ac.pdf. Another embedded URI, http://vspopticscl-preview.rocks/uploads/1/3/0/7/130775075/130775075.html#relacion+de+etica+y+medio+ambiente, is also present. This suggests a pattern of redirecting users to potentially malicious or ad-heavy websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://vspopticscl-preview.rocks/uploads/1/3/0/7/130775075/130775075.html#relacion+de+etica+y+medio+ambiente PDF link annotation
    • http://emeraldvineyardestate.com/uploads/1/3/0/7/130739401/950cbf8ac.pdfIn PDF document text
    • http://matthesmusic.org/uploads/1/3/0/4/130435721/6454781.pdfIn PDF document text
    • http://mrditch.com/uploads/1/3/1/0/131071181/ruwuvew.pdfIn PDF document text
    • http://kevinabneylmt.com/uploads/1/3/0/4/130435516/tapipufiwuxumiz.pdfIn PDF document text
    • http://piecesoftimewest.com/uploads/1/3/1/6/131606256/4209623.pdfIn PDF document text
    • http://karlek.kitchen/uploads/1/3/0/8/130874223/18b01f0d8a.pdfIn PDF document text
    • http://didditt.net/uploads/1/3/1/0/131070301/1775281.pdfIn PDF document text
    • http://cameron-beach.com/uploads/1/3/0/5/130590391/xoxomupevazod.pdfIn PDF document text
    • http://candidateswillsoar.com/uploads/1/3/0/2/130289589/7d22cd.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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001536e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1536E 9776 bytes
SHA-256: d8b917a7b1e198c43fba7d8bf9bbeb769b563c1605e1742f21249d0d80113953
font_01_sfnt_off00017689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17689 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea
font_02_sfnt_off00017ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17FF2 16048 bytes
SHA-256: 7a6641293a25dad41bf4ccf0b175335e73dc642e5f620043da4d3192c6bf0c4d

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