Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ff8ee60e4db4de…

MALICIOUS

PDF

38.0 KB Created: 2020-04-05 08:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: cdb9345d9bdeff52cc32b5f1f6fc30a1 SHA-1: d461df437852287271cef51c4ee33390f460fd6a SHA-256: 72ff8ee60e4db4de46758fb9c5390beb387cc98173cc6e6b22e2848ee80b0f5f
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests an attempt to drive traffic to potentially compromised or malicious web pages. No scripts were extracted, but the PDF structure itself is indicative of a link farm or redirection scheme.

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://floralfaeriedesigns.com/uploads/1/3/0/8/130814877/130814877.html#nba+2k14+sp+glitch+ps4
    • http://savannahsplayhouse.com/uploads/1/3/1/4/131437544/9547475.pdf
    • http://radioliberland.com/uploads/1/3/0/5/130544591/3666365.pdf
    • http://c9concepts.com/uploads/1/3/0/6/130640020/rekov_kuboxajeb.pdf
    • http://www.dappercookie.com/uploads/1/3/0/2/130272362/f3482d8043fda1.pdf
    • http://gomgconsulting.com/uploads/1/3/1/3/131378942/tokutojefusenij.pdf
    • http://infamouslands.com/uploads/1/3/0/5/130552084/6505133.pdf
    • http://theresanotherwayout.org/uploads/1/3/0/6/130605119/fonedirigatim.pdf
    • http://lighthouseorganizing.com/uploads/1/3/0/7/130775310/salatokumu.pdf
    • http://unorthodoxstudiosc.com/uploads/1/3/0/8/130813881/lowawolipalada.pdf
    • http://cetaceanstimorleste.com/uploads/1/3/0/6/130604372/ce625a295.pdf
    • http://bocleaningservices.net/uploads/1/3/1/1/131164358/gidikokese_xoxuwavi_kapibekubedogu_nugowa.pdf
    • http://mysticthisweek.com/uploads/1/3/1/4/131437615/eeaaf9105.pdf
    • http://abbies.blog/uploads/1/3/0/6/130621200/kijelevokigekew_wupimowalolam_biwafiru.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_off0000694d.bin
a30fa8a3fd3c2dfd82abd3f433915b93872e47138dcda1669c48fe320bc90014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x694D 8440 bytes

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