Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b782ce772907cd…

MALICIOUS

PDF

45.9 KB Created: 2020-06-05 02:26:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b5509d6544dea008b32826e08a2c988 SHA-1: e1d6e43c010f08c41fbd7f429fd23d1e02e13664 SHA-256: 69b782ce772907cde8ae5a74e51b3e02dd1c6f397e0855ea9798883cc28a4bdd
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The embedded document body text, though heavily obfuscated, contains a URL that matches one of the extracted external links, suggesting a deliberate attempt to direct users to potentially malicious content. No scripts were extracted, but the sheer volume of external links points to a malicious intent, likely related to SEO abuse or hosting further malware.

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://preciousdropyounglivingsabah.com/uploads/1/3/1/4/131452886/131452886.html#com+Objeto+aquilo+tem+sido+separado
    • http://glitchedworks.com/uploads/1/3/1/4/131437361/kitobarudifeven-gosojaza-bojuratiwu.pdf
    • http://blueoceanconsulting.xyz/uploads/1/3/0/6/130621691/salinelepulutid-vevafesax.pdf
    • http://liveplex.live/uploads/1/3/1/0/131069762/77db717db4.pdf
    • http://billy-nelson.com/uploads/1/3/0/3/130313107/1ce1c1ce.pdf
    • http://fearlessculture.org/uploads/1/3/0/8/130814921/favovugatix_woxudu.pdf
    • http://mail.ingridliberte.com/uploads/1/3/0/6/130639854/buxudukigututazixuv.pdf
    • http://prince-harry-lookalike.com/uploads/1/3/0/4/130435842/9df0d21.pdf
    • http://cpcalendars.pamelaj.com/uploads/1/3/0/6/130639706/xuwulunudipu_pazituruwamen_vapivak.pdf
    • http://preciousdropyounglivingsabah.com/uploads/1/3/1/4/131452886/terms.html
    • http://preciousdropyounglivingsabah.com/uploads/1/3/1/4/131452886/dmca.html
    • http://preciousdropyounglivingsabah.com/uploads/1/3/1/4/131452886/policy.html
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://relexuxiwa.files.wordpress.com/2020/06/57405241398.pdf
    • https://saxevana.files.wordpress.com/2020/06/58529691732.pdf
    • https://xefipun.files.wordpress.com/2020/06/50924155637.pdf
    • https://suzofosal.files.wordpress.com/2020/06/50313321358.pdf
    • https://juwafozin.files.wordpress.com/2020/06/vorefubegafebamo.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_off00008587.bin
4c9f6112a67fc443431e36ec750f56e8287c8e38219bd6fde4de60aea5ef2b76
pdf-font-stream PDF embedded font (sfnt) at offset 0x8587 12044 bytes