Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee11ac2f64babced…

MALICIOUS

PDF

33.5 KB Created: 2020-04-03 02:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0f2a06772ff9dcd2ac2fc4648d563c5a SHA-1: b5dfb85010cb7a01d6f960445be8f69ef80a4c60 SHA-256: ee11ac2f64babcedb41ae9f39a083635e887c55a46df072b4d9d489237b35473
94 Risk Score

Malware Insights

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

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 inflate search engine rankings or distribute malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous SEO-linked PDFs suggests a coordinated effort to direct users to potentially harmful sites. No scripts were extracted from this sample.

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://jimmyheuga.org/uploads/1/3/0/6/130620691/130620691.html#2000+pontiac+grand+am+p0440
    • http://pinkmoontravel.com/uploads/1/3/0/7/130776257/japeg.pdf
    • http://azguardians4kids.com/uploads/1/3/0/5/130551264/fcf543.pdf
    • http://thecubestop.com/uploads/1/3/1/3/131383848/5821702.pdf
    • http://smallbusinessgrowers.com/uploads/1/3/0/2/130289563/puvufisonovatobu.pdf
    • http://phonesavers.ca/uploads/1/3/0/6/130621871/f4dfa71025.pdf
    • http://emoccapitalpower.com/uploads/1/3/0/3/130323996/tivawepewowinegerok.pdf
    • http://hairextensionsvoorhaar.nl/uploads/1/3/0/7/130739875/tizafitekege.pdf
    • http://lahaciendaov.com/uploads/1/3/0/5/130539265/ramavuwaw.pdf
    • http://mx.amandathomasart.com/uploads/1/3/0/4/130477026/4348831.pdf
    • http://marin-psychiatry.com/uploads/1/3/0/6/130639662/dd6efde564c18.pdf
    • http://kimwimmer90gmail.com/uploads/1/3/0/9/130969946/8005877.pdf
    • http://directnewscommentary.com/uploads/1/3/0/9/130969037/bijivazinew.pdf
    • http://cascinabellavista.com/uploads/1/3/0/2/130271081/4562767.pdf
    • http://thehermitstudio.com/uploads/1/3/0/4/130436224/39bef768a0.pdf
    • http://thetaxiwiu.com/uploads/1/3/0/6/130605315/kinezosaxesigadugu.pdf
    • http://margaretleonard.com/uploads/1/3/0/9/130969200/030884a6772.pdf
    • http://suass.com/uploads/1/3/0/9/130969480/ada4c.pdf
    • http://mysoulfulmind.com/uploads/1/3/0/3/130313220/luzimaw-xonaxepisovasa.pdf
    • http://feastofthemiddleeast.com/uploads/1/3/0/8/130814672/vilijovopini.pdf
    • http://thesaltcave.net/uploads/1/3/0/2/130288751/2699a4.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_off00005cb9.bin
4f93d392cd5f6506b87720d3ad12320029da819123a693c75c7396d27c668d65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB9 7164 bytes

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