Malicious PDF — malware analysis report

Static analysis result for SHA-256 86be71d952cca10c…

MALICIOUS

PDF

41.6 KB Created: 2020-03-30 05:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e8c97631aaf516c1d21d467684a923a9 SHA-1: 259124efa2147e63d84d31fdbe955578635412f3 SHA-256: 86be71d952cca10c962c104b30f9bedcb5f9421131d0da06cf5ef1946b57dfdb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, many of which are dynamically generated and point to unrelated domains, suggesting a link farm or SEO poisoning tactic. The document body mentions 'Plc ladder logic programming' and includes a URL that also references this topic, likely a lure to direct users to malicious content. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of exploit or malicious payload delivery.

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://lamee-dark-version3-de.devsite-1.com/uploads/1/3/0/6/130605041/130605041.html#plc+ladder+logic+programming
    • http://monumentalhomeentertainment.com/uploads/1/3/0/4/130476215/nazexowe_meripunoxagi_sizifeneba.pdf
    • http://parklanebaptistchurch.info/uploads/1/3/0/5/130545666/dibigeluvomitixise.pdf
    • http://wildflowerwritings.net/uploads/1/3/0/2/130289233/nezev_wopifedumomine_gijuwuvoposep_migusevijof.pdf
    • http://cl-designs.ca/uploads/1/3/0/4/130435743/jikejowonezi.pdf
    • http://ivoryoung.com/uploads/1/3/0/3/130379674/b28ec638c04e.pdf
    • http://pikespeakseniors.org/uploads/1/3/0/5/130551935/sujose-kimoduri-zaluzimaxofasu-kekip.pdf
    • http://mail.showmedental.com/uploads/1/3/0/4/130478160/mapamejoja.pdf
    • http://hawaiibreastfeedinghelp.com/uploads/1/3/0/5/130551543/3cd780f055d.pdf
    • http://therring.com/uploads/1/3/0/5/130539348/wawojijen.pdf
    • http://petfolder.net/uploads/1/3/0/2/130288939/nenikevi-reneruxolilafes-jevumatidexival.pdf
    • http://suor.pt/uploads/1/3/0/7/130740140/nusujofigukewele.pdf
    • http://letsdanceteamnyc.com/uploads/1/3/0/5/130538842/zinilavewisojegen.pdf
    • http://lady-jay.com/uploads/1/3/1/0/131070727/2551947.pdf
    • http://weshootbridesworldwide.com/uploads/1/3/0/4/130488415/9448610.pdf
    • http://goprotrans.com/uploads/1/3/0/2/130291766/b83f6cc07773c.pdf
    • http://liquidbluesrq.com/uploads/1/3/0/4/130483871/2512770.pdf
    • http://consertlar.net/uploads/1/3/0/6/130605240/folonezafasut_meroxap_lesuwaw_godefuxefe.pdf
    • http://edermtest.com/uploads/1/3/0/7/130739164/gajatofinodul.pdf
    • http://havenhealing.com/uploads/1/3/0/3/130324191/4286033.pdf
    • http://addinginsight.com/uploads/1/3/0/6/130605381/vigivire.pdf
    • http://mountainshadowfarm.ca/uploads/1/3/1/1/131164393/23b9c824.pdf
    • http://onpointmn.com/uploads/1/3/0/5/130538839/kebebumawedajo.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_off00007ac2.bin
1b91baf7a3b42667de7783ed86e4a6ac8e1910c896e076e4e8ae1f96d91997a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC2 7752 bytes

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