Malicious PDF — malware analysis report

Static analysis result for SHA-256 1101dea7eb7cbd9b…

MALICIOUS

PDF

35.4 KB Created: 2020-03-28 03:42:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7d84071d743a67c5c2670f6aa62fec69 SHA-1: 9e376e9af403e06a84c02dadb7ac61d4b55120bd SHA-256: 1101dea7eb7cbd9bc901c1001a513260d0ca71f4fa0ceae36983da75ae5061c0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links to various domains, many of which appear to be part of a link farm designed to artificially boost search engine rankings. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is a malicious attempt to redirect users or distribute further malicious content. The ML classifier also flagged this PDF with high confidence.

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://columbusvoyage.com/uploads/1/3/0/7/130775220/130775220.html#programa+para+calcular+el+area+de+un+triangulo+rectangulo+en+c++
    • http://abmco.cz/uploads/1/3/0/2/130291786/3727409.pdf
    • http://doyoustillloveme.net/uploads/1/3/0/2/130288510/9711806.pdf
    • http://aripreservationtrust.org/uploads/1/3/0/9/130968958/87d08647.pdf
    • http://centrocristianogetsemani.com/uploads/1/3/0/6/130621086/devofufofamo.pdf
    • http://madeiralifewellnessfestival.com/uploads/1/3/0/6/130639740/vorukelonazifolef.pdf
    • http://canada-scandinavia.ca/uploads/1/3/0/4/130491513/musifiri.pdf
    • http://nataliegarces.com/uploads/1/3/0/6/130605159/4374f9d.pdf
    • http://sebastianbergstrommusic.com/uploads/1/3/0/7/130738929/470d6bc54c.pdf
    • http://chowchowcafe.com/uploads/1/3/0/8/130814401/fafamepotanurat.pdf
    • http://survivingtwenties.com/uploads/1/3/0/6/130604948/vibamixavo_kigivipa.pdf
    • http://hollyspetportraits.com/uploads/1/3/0/7/130740521/sitomeji.pdf
    • http://kelleyhollis.com/uploads/1/3/0/5/130590158/setunizirofenebodene.pdf
    • http://not4cell.com/uploads/1/3/0/2/130272233/wovomoduwuzako.pdf
    • http://www.deathbenotproudpresentation.com/uploads/1/3/0/8/130813663/jevaruzalizufi-dajefuwojopegiw-forefefofasi.pdf
    • http://alturaenviromental.com/uploads/1/3/0/4/130483478/94ba5.pdf
    • http://graymanquinndesigns.com.au/uploads/1/3/0/3/130324027/dbd1987413.pdf
    • http://www.rightestateagentsbrixton.co.uk/uploads/1/3/0/5/130550794/befire.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_off00005ce3.bin
9e63ebb735fa4d4cce9f6fe5051e408bb6b051cd9d95fc15d06d8a8d8b5fa548		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE3 8908 bytes

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