Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7763e09936c262f…

MALICIOUS

PDF

61.1 KB Created: 2020-03-13 07:16:16 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 46a3420f178026aabc79652a55ce5d49 SHA-1: 04efd5c2fd719f81a4dc45adf94245f2dc78c07c SHA-256: f7763e09936c262f4bd508c92b3daa91daa281eeec662c00703ed40cd3e78d34
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though heavily obfuscated, contains a URL that matches one of the extracted links, suggesting a lure to external content. The primary intent appears to be SEO spam or potentially a phishing campaign disguised as 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://cpanel.sinestesiacorp.com/uploads/1/3/0/5/130544009/130544009.html#chokher+bali+bangla+picture PDF link annotation
    • http://localseoguide.net/uploads/1/3/0/2/130288334/jewusoluzo.pdfIn PDF document text
    • http://bailyoursail.com/uploads/1/3/0/2/130289530/5d65f1d21afeca.pdfIn PDF document text
    • http://absolutely-coraldee.com/uploads/1/3/0/2/130288602/2ef5e90.pdfIn PDF document text
    • http://www.socialrushboutique.com/uploads/1/3/1/1/131164320/jivokuni.pdfIn PDF document text
    • http://mathematicallyeverafter.com/uploads/1/3/0/5/130590043/94ddf80c97a7.pdfIn PDF document text
    • http://torontowineevents.com/uploads/1/3/0/4/130489080/452581.pdfIn PDF document text
    • http://augustapickleball.org/uploads/1/3/0/5/130588672/2451313.pdfIn PDF document text
    • http://sharkdinghy.com/uploads/1/3/0/6/130621486/1ad8f6e.pdfIn PDF document text
    • http://benwatfordphoto.com/uploads/1/3/0/2/130272890/9926884.pdfIn PDF document text
    • http://mryanki.com/uploads/1/3/0/5/130589285/lerufumogojexe_dilalerub_norepomizuz_ranufujiwejo.pdfIn PDF document text
    • http://estuaryconsulting.com/uploads/1/3/0/4/130436525/2134034.pdfIn PDF document text
    • http://www.justusgirlsonline.com/uploads/1/3/0/7/130738973/e828b663b.pdfIn PDF document text
    • http://seareflectionson30a.com/uploads/1/3/0/4/130476607/20385e1dedbc.pdfIn PDF document text
    • http://newbist.com/uploads/1/3/0/2/130292179/5682910.pdfIn PDF document text
    • http://angelscenographer.com/uploads/1/3/0/7/130776309/1498cdf79e1.pdfIn PDF document text
    • http://channel42.fm/uploads/1/3/0/7/130775918/5324080.pdfIn PDF document text
    • http://mail.rcbnorthwestern.com/uploads/1/3/0/4/130489102/fotivijafelusevibixu.pdfIn PDF document text
    • http://nuobeijing.devsite-1.com/uploads/1/3/0/4/130477170/9546866.pdfIn PDF document text
    • http://greategret.net/uploads/1/3/0/5/130550998/tibepolegi.pdfIn PDF document text
    • http://hostmaster.carmenschmidt.me/uploads/1/3/0/6/130620976/5356820.pdfIn PDF document text
    • http://bluesmasters.club/uploads/1/3/0/6/130639100/tujuguxixigefozojut.pdfIn PDF document text
    • http://saxtonsriverdistillery.com/uploads/1/3/0/6/130639791/5232166.pdfIn PDF document text
    • http://clumsybutcute.com/uploads/1/3/0/5/130539990/guwidovibekusetideb.pdfIn PDF document text
    • http://b-24-thegreenhornet.net/uploads/1/3/0/5/130588506/6920526.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 3

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_off0000c3aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3AA 8624 bytes
SHA-256: ace4638db0fd8809ed05732eb438fa8a320ef93c53030a2f8afafa761c54d6bf

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