Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f13a657eda1334…

MALICIOUS

PDF

40.4 KB Created: 2020-03-30 10:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9e86e6c93b3ee1974398f13bc30baa9a SHA-1: 09a76d030f73c31cf6fb1af7ff2907c0faf42ecc SHA-256: b2f13a657eda1334cf1ca5e8a690b8fd4a54d65570a05c7b6afd0c44ffc461d7
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body text, though partially corrupted, suggests a lure related to forming a workers' union in Venezuela. The primary malicious activity appears to be directing users to a network of linked websites, likely for further exploitation or phishing. The ML classifier strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://74-123-75-191.mgwnet.com/uploads/1/3/0/8/130814177/130814177.html#requisitos+para+formar+un+sindicato+de+trabajadores+en+venezuela
    • http://ivansparrow.com/uploads/1/3/0/8/130874535/fbda19759725.pdf
    • http://raidazimut.com/uploads/1/3/0/7/130776730/e28508aa048004.pdf
    • http://savvyonashoestring.com/uploads/1/3/0/7/130739616/2192023.pdf
    • http://josephandarlene.com/uploads/1/3/0/3/130324331/8748422.pdf
    • http://labreadesigns.com/uploads/1/3/0/8/130814783/e7a57acaf0b.pdf
    • http://thedeanofcleanllc.com/uploads/1/3/0/6/130604910/9b9fb3d30.pdf
    • http://formandfunction.services/uploads/1/3/0/5/130542758/bbb3b66c.pdf
    • http://southerntouchroofing.com/uploads/1/3/0/6/130639446/gijavarupuxemanijiw.pdf
    • http://wiviwv.com/uploads/1/3/0/6/130621940/7675907.pdf
    • http://liftleague.com/uploads/1/3/0/4/130489072/7400a2a458bd2.pdf
    • http://elevatesportsfitness.com/uploads/1/3/0/5/130539990/xuxegafekajig.pdf
    • http://cloud9forlife.org/uploads/1/3/0/6/130640090/16f1f2f065c46c.pdf
    • http://vegas-family.com/uploads/1/3/0/4/130483147/15b4dd334.pdf
    • http://shrinkysheets.com/uploads/1/3/0/8/130814066/1272643.pdf
    • http://aquinasenglish.com/uploads/1/3/1/3/131379836/luwuwur.pdf
    • http://bfmix.com/uploads/1/3/1/4/131438460/ce7296c763f.pdf
    • http://eiotown.com/uploads/1/3/1/1/131164199/vipab.pdf
    • http://streamlinemedicalbillingca.com/uploads/1/3/0/3/130323375/vewutobewud.pdf
    • http://hostmaster.eukay.com/uploads/1/3/1/4/131408369/5850805.pdf
    • http://hudsonvalleymemoir.com/uploads/1/3/0/4/130483320/mutexosaberajodavap.pdf
    • http://boucherienouvelle.ca/uploads/1/3/0/9/130969844/fafuparugugavabebuwe.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_off000074b3.bin
46b39244f827b7435c684b8a6c82055a7e6b6d4078c18fd5f04fe154ed62367b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B3 7844 bytes

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