Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e84eadf5f73381…

MALICIOUS

PDF

46.5 KB Created: 2020-03-29 09:39:03 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 163287b0ec1f5b68244351c66649894b SHA-1: d6b17984e55bbff2fae25175ceda3f0abc1ddd0e SHA-256: 47e84eadf5f73381e6588cc710f7598f4efb1798433d664be95bf037d87d5fc7
94 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links, many pointing to similarly structured URLs on different domains, suggesting a link farm or SEO manipulation tactic. The document body contains a reference to 'Ebay kleinanzeigen cdj 2000 nexus 2', which appears to be a lure to encourage clicks on the embedded links. The primary attack pattern involves directing users to a multitude of external websites.

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://shopbelfast.info/uploads/1/3/1/3/131379198/131379198.html#ebay+kleinanzeigen+cdj+2000+nexus+2
    • http://nomadcc.com/uploads/1/3/0/6/130640066/pelowozi_bisedezimafox_salapo.pdf
    • http://yq-wine.com/uploads/1/3/0/5/130551745/zikob.pdf
    • http://www.jakehamman.com/uploads/1/3/0/6/130605344/gupixaxirunoga-sojigop-nosisuwifuwonob-dujazibima.pdf
    • http://www.villasanrocco.net/uploads/1/3/0/7/130776886/xejifuxupovuk-luwenelo-xixumokusi.pdf
    • http://snikkidybartending.com/uploads/1/3/1/0/131070737/cd767.pdf
    • http://mycityrebate.com/uploads/1/3/0/6/130604258/ce9682c.pdf
    • http://missionarytoargentina.com/uploads/1/3/0/7/130739922/musawejigovitak.pdf
    • http://facepaintingkelowna.com/uploads/1/3/0/7/130776041/tasudekenow_faluvizi_gaxike.pdf
    • http://bodaciousvegan.com/uploads/1/3/0/2/130287462/f1f1dc7d17.pdf
    • http://piperbooksexcel.com/uploads/1/3/0/2/130287894/5739354.pdf
    • http://mx.pontoonboatsontario.com/uploads/1/3/0/5/130551210/zusixeb_rudajovegugukil_xuwiteg_kidikosilona.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076e0.bin
fbd061798bf5edef20cd7177701ed78ce983257972f3ab43f934f2390ed8d2fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E0 6852 bytes
font_01_sfnt_off000087f8.bin
c272335747a2a74fa33a6f8209517e6cc428e07b7583effa425fc8d51d048e66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87F8 9992 bytes

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