Malicious PDF — malware analysis report

Static analysis result for SHA-256 f083fd80cda77f81…

MALICIOUS

PDF

39.1 KB Created: 2020-03-22 13:02:29 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 01621b50388903ba32ae9202256dd3fc SHA-1: 832cbf6b2e41e7fc55c334a5ef1a01278dc429e5 SHA-256: f083fd80cda77f81451ff526f7941bb2caca05bb15576475a78b8827ee7046be
96 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body contains text related to Mesopotamian history, but the primary malicious activity appears to be the distribution of numerous links to external PDF files hosted on various domains. These links likely serve as a link farm for SEO manipulation or to distribute further malicious content.

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://mychinesewatch.com/uploads/1/3/1/1/131164121/131164121.html#del+nomadismo+al+sedentarismo+mesopotamia PDF link annotation
    • http://naturesbeautysc.com/uploads/1/3/0/4/130483656/solugone-lasomubo.pdfIn PDF document text
    • http://www.simplycfood.com/uploads/1/3/0/4/130476318/7651874.pdfIn PDF document text
    • http://ogartanddesign.com/uploads/1/3/0/6/130621789/e3fe2a347a48b.pdfIn PDF document text
    • http://benchtobedside.net/uploads/1/3/0/9/130969492/9739861.pdfIn PDF document text
    • http://www.atlantamidtowncpa.com/uploads/1/3/0/6/130604537/6646855.pdfIn PDF document text
    • http://wmwhospitality.com/uploads/1/3/0/7/130740163/pulekowozukoxuvabe.pdfIn PDF document text
    • http://empoweringminorityyouth.com/uploads/1/3/0/4/130436226/pokelemobe_tupajamibot_xisasuwopupigum_puzorozuxo.pdfIn PDF document text
    • http://nikkosbread.com/uploads/1/3/0/6/130603946/libis-jeduj-pabogofasijid-risubusuxagug.pdfIn PDF document text
    • http://coralmed.org/uploads/1/3/0/4/130476266/baboganutujifobigaw.pdfIn PDF document text
    • http://curiousconversations.org/uploads/1/3/0/8/130814402/rokajino-nutema.pdfIn PDF document text
    • http://trogliomusic.com/uploads/1/3/0/2/130288729/ba0d7abecd.pdfIn PDF document text
    • http://disarmingdoomsday.com/uploads/1/3/0/4/130435688/1716046.pdfIn PDF document text
    • http://newyorkwinelaw.com/uploads/1/3/0/5/130588157/23344d357989.pdfIn PDF document text
    • http://mx.jlbarry.com/uploads/1/3/0/7/130739101/zigevitugomiw.pdfIn PDF document text
    • http://angelamatusik.com/uploads/1/3/0/6/130639479/bilofagijobado.pdfIn PDF document text
    • http://mrlob9000.net/uploads/1/3/0/4/130476075/jagesenafuwuje_nujoxis.pdfIn PDF document text
    • http://www.binnachbooks.com/uploads/1/3/0/2/130291696/c2e006.pdfIn PDF document text
    • http://sherrycrawford.ca/uploads/1/3/0/4/130483739/fotenora.pdfIn PDF document text
    • http://handmadebysoosh.com/uploads/1/3/0/7/130739631/af1948081c83.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E15 8556 bytes
SHA-256: 5b487c8eb491c98f52c161ce6d00b648ab4e54f1b3f16bca7e40368cfc235526

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