Malicious PDF — malware analysis report

Static analysis result for SHA-256 915fb2a72814eaa5…

MALICIOUS

PDF

63.6 KB Created: 2020-05-21 01:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 93713817914a1e0c3c432f18ec21d048 SHA-1: 1bb9574747371bf21c5935d2f412ac0c26ab1e48 SHA-256: 915fb2a72814eaa5fb2521c72f6d14a47855b507cedb573f8c0afa648524a571
96 Risk Score

Malware Insights

MITRE ATT&CK
T1598 External Remote Services T1204 User Execution

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution mechanism for further malicious content. The document body contains garbled text and a reference to 'Ppsspp cso games list', which may be a lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://directroofrestoration.com/uploads/1/3/1/4/131483265/131483265.html#ppsspp+cso+games+list PDF link annotation
    • http://dignityandjll.com/uploads/1/3/0/5/130550667/popafujuzuwa.pdfIn PDF document text
    • http://surmonte.net/uploads/1/3/0/8/130813558/88c223ba0f9.pdfIn PDF document text
    • http://oranoandcapgemini.com/uploads/1/3/1/4/131484268/jutekegosa.pdfIn PDF document text
    • http://groovetatva.com/uploads/1/3/1/1/131163634/tefebogam.pdfIn PDF document text
    • http://blackboxmixingandmastering.com/uploads/1/3/1/4/131438046/a20758e6.pdfIn PDF document text
    • http://njdogmoms.com/uploads/1/3/1/8/131856594/f7591035fc.pdfIn PDF document text
    • http://fitnessrebornuk.com/uploads/1/3/0/2/130273753/453541.pdfIn PDF document text
    • http://sarahcfrancis.com/uploads/1/3/0/5/130588976/3787f252488ee4.pdfIn PDF document text
    • http://codeoftheconqueror.com/uploads/1/3/0/6/130639491/6299177.pdfIn PDF document text
    • http://thetranquilgoat.com/uploads/1/3/1/6/131606345/sinobibijegamo.pdfIn PDF document text
    • http://idealcareers.net/uploads/1/3/0/5/130588157/9a4666.pdfIn PDF document text
    • http://coopers-online.com/uploads/1/3/0/7/130776401/zufesivejigabi_lipilawaxodupen.pdfIn PDF document text
    • http://usui-toshimasa111.com/uploads/1/3/1/6/131606965/surulewavigelawebiko.pdfIn PDF document text
    • http://namcodiversityexcellence.org/uploads/1/3/1/0/131069759/gujexadifug.pdfIn PDF document text
    • http://journeyofwesley.com/uploads/1/3/0/8/130873997/fuxowuw.pdfIn PDF document text
    • http://arrow-health.com/uploads/1/3/1/8/131872289/sokiferer.pdfIn PDF document text
    • http://rewritingtime.com/uploads/1/3/0/4/130477074/jowojisuxebe.pdfIn PDF document text
    • http://wandertripper.com/uploads/1/3/0/6/130639152/falutenewo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

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_off0000ccf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF3 11048 bytes
SHA-256: c0be64361754aadad996f56daaa2d4e9e725c638733126dee1b2fe56494aa83b

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