Malicious PDF — malware analysis report

Static analysis result for SHA-256 098d8a08a47dad5f…

MALICIOUS

PDF

37.3 KB Created: 2020-03-17 06:37:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 78527c44fbc2f4ea724637d3aa9f48a5 SHA-1: 791a3fdeef7419605f00c7758892dc31eae5fc5f SHA-256: 098d8a08a47dad5f1695031ad10fc1fef1579b5e15f08f3451702243030ccf3d
96 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary purpose appears to be directing users to a variety of websites, potentially for SEO spam or to host further malicious content. While no scripts were explicitly extracted, the nature of the embedded links suggests a malicious intent to redirect users to potentially harmful sites.

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://hypnose-kinderwunsch.com/uploads/1/3/0/7/130776639/130776639.html#star+wars+d6+fillable+character+sheet+pdf
    • http://moniqueyin.com/uploads/1/3/0/7/130738676/vofarokovegi-givegebezene.pdf
    • http://johnkurimd.com/uploads/1/3/0/5/130551179/0f7510fea5b2.pdf
    • http://www.deadlinehomicide.com/uploads/1/3/0/6/130603764/zireze-dirogojado-wazopuba.pdf
    • http://m.collisterunitedmethodist.org/uploads/1/3/0/8/130814052/zunob-xukanigatupow-pejejonesetutur-koganero.pdf
    • http://tulipcupcakeliners.com/uploads/1/3/0/5/130550794/b4681b2dffd8f.pdf
    • http://sunriseshoresbeachresort.com/uploads/1/3/0/9/130969481/c27b2.pdf
    • http://annaparkernaples.com/uploads/1/3/0/8/130813524/8303463.pdf
    • http://maureengrealishdesigns.com/uploads/1/3/0/5/130551505/889386.pdf
    • http://markterryart.org/uploads/1/3/0/2/130291676/muror.pdf
    • http://meduv.net/uploads/1/3/0/6/130620885/764b083766611c.pdf
    • http://www.conso-mobil01.com/uploads/1/3/1/0/131069859/c7da5d60cd098.pdf
    • http://lbnlex.com/uploads/1/3/0/3/130379162/e3aa5a31.pdf
    • http://joelangemusic.com/uploads/1/3/0/9/130969330/0cd119988ce743c.pdf
    • http://hostmaster.farah.fi/uploads/1/3/0/5/130590351/3965425.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_off0000695e.bin
c2c327dba0c11653c39f19acca4ec4b90d2558fba7e84a82a493a99de6af102a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x695E 7840 bytes

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