Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c3c7b0d3b0a7a3…

MALICIOUS

PDF

40.6 KB Created: 2020-03-26 09:14:25 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: c9254108a0145839b78b0cf56712d4ca SHA-1: 801d584d2951dd7153e308d5a0884c8714993f09 SHA-256: 24c3c7b0d3b0a7a342866e373b9ee82ec7e529360d5980e477d2c6bf1f30c099
104 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains. This behavior is indicative of a link farm or SEO poisoning tactic, designed to manipulate search engine rankings or distribute malicious content. The presence of a 'download button' lure further supports the malicious intent. No scripts were extracted, limiting the ability to determine a specific payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://islamophoria.com/uploads/1/3/0/4/130435561/130435561.html#metrology+and+measurements+lecture+notes+ppt PDF link annotation
    • http://piecesoftimewest.com/uploads/1/3/0/5/130550887/midoka-gubev-duzejawufadu.pdfIn PDF document text
    • http://madonnachocolates.com/uploads/1/3/0/6/130621020/tulup.pdfIn PDF document text
    • http://flowpvp.com/uploads/1/3/0/7/130739750/5fab79404f274.pdfIn PDF document text
    • http://mattpaino.com/uploads/1/3/0/6/130640198/xexem.pdfIn PDF document text
    • http://kyleclowns.com/uploads/1/3/0/7/130738559/nazatumumi_luperi.pdfIn PDF document text
    • http://www.ashadeofvintage.com/uploads/1/3/0/4/130483710/5d234fc4c6b43d.pdfIn PDF document text
    • http://fxcapitalservices.com/uploads/1/3/1/1/131163908/serebalukizizerodu.pdfIn PDF document text
    • http://m1houses.com/uploads/1/3/0/7/130739991/111503.pdfIn PDF document text
    • http://malwiallc.com/uploads/1/3/0/7/130739039/1457522.pdfIn PDF document text
    • http://richardbwatson.net/uploads/1/3/0/7/130739313/1010007.pdfIn PDF document text
    • http://chupacandelabra.com/uploads/1/3/0/4/130435927/gegujes-xisirerulobi-mexularav.pdfIn PDF document text
    • http://theplanwellnessplace.com/uploads/1/3/0/6/130620267/0eb86ce08d4b.pdfIn PDF document text
    • http://myasallnatural.com/uploads/1/3/0/6/130605349/1b31c532b487.pdfIn PDF document text
    • http://northriverhairandnails.com/uploads/1/3/0/6/130639083/maxudin.pdfIn PDF document text
    • http://www.marskitchenevents.com/uploads/1/3/0/8/130874485/5bbfe.pdfIn PDF document text
    • http://prana.clientdemo.co.nz/uploads/1/3/0/5/130542734/750aa6cf1.pdfIn PDF document text
    • http://hilltopbakes.com/uploads/1/3/0/2/130291803/savenixin.pdfIn PDF document text
    • http://agentedapazfbi.com/uploads/1/3/1/0/131070240/6137622.pdfIn PDF document text
    • http://alphatutors.com.au/uploads/1/3/0/6/130640092/suloka-wumagifirono-damofa.pdfIn PDF document text
    • http://hostmaster.ulcberkeley.org/uploads/1/3/0/6/130639729/tonera_nagor_kugopawaledu_fadove.pdfIn PDF document text
    • http://robbassinmentalperformance.com/uploads/1/3/0/6/130620293/6182948.pdfIn PDF document text
    • http://komornik.eniroweb.pl/uploads/1/3/0/2/130274145/lagelituxop.pdfIn PDF document text
    • http://irrigationmedics.com/uploads/1/3/0/2/130289353/9534338.pdfIn PDF document text
    • http://www.forindianola.com/uploads/1/3/0/3/130379604/sufagewuzege.pdfIn PDF document text
    • http://the-city-exchange.com/uploads/1/3/0/7/130775570/rinokagufuzumezufuf.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 4

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_off00007577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7577 7952 bytes
SHA-256: 669f44fa342dcd2b196d9ac645e4bb90a5f3e02b8f6ceb783442e52863fd0ed9

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