Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f67a5b4a5495aeb…

MALICIOUS

PDF

71.8 KB Created: 2020-03-17 10:02:40 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: eff2036ce3800a1c71e17d652cf88056 SHA-1: b57cf94f75ee21026b5005bf34a31f13600ae653 SHA-256: 9f67a5b4a5495aeb203ef6a8eeb50a8fc2d4a8b5a8cdf195b3cc69eac7994d96
104 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains. This suggests a link farm or redirection mechanism designed to obscure the ultimate destination. The presence of a 'download button' heuristic further supports the idea that the document is intended to trick the user into clicking a link. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://unicoiwinetrail.com/uploads/1/3/0/4/130478433/130478433.html#manual+para+java+netbeans PDF link annotation
    • http://mercurynewsnet.org/uploads/1/3/0/6/130639074/xupisofanapu.pdfIn PDF document text
    • http://www.louisvillefuneralservice.com/uploads/1/3/0/6/130621116/rupadegi-vowuluropojuw-dejoxoji.pdfIn PDF document text
    • http://journeytoanewstart.org/uploads/1/3/0/5/130588165/bf765e68c63b42f.pdfIn PDF document text
    • http://2017.renewablenations.us/uploads/1/3/0/5/130546392/7235428.pdfIn PDF document text
    • http://royalcannabisco.ca/uploads/1/3/0/2/130271128/xekeziruveven.pdfIn PDF document text
    • http://parcelshipping.international/uploads/1/3/0/5/130544191/taloferiluvupepawiz.pdfIn PDF document text
    • http://luxurydaytonahomes.com/uploads/1/3/0/8/130874289/wabasonewefobage.pdfIn PDF document text
    • http://fordf25.info/uploads/1/3/0/5/130540437/xomiwa-sepowixibesik-lozugozen-zekikewatoga.pdfIn PDF document text
    • http://ww.essexbuildingandcarpentry.co.uk/uploads/1/3/0/4/130477090/1720509.pdfIn PDF document text
    • http://futuraranch.com/uploads/1/3/0/2/130287311/difiduxuzotilasexap.pdfIn PDF document text
    • http://clarender.com/uploads/1/3/0/6/130621201/79538.pdfIn PDF document text
    • http://www.thehenryhayes.com/uploads/1/3/0/6/130621435/6911850.pdfIn PDF document text
    • http://edengiftco.com/uploads/1/3/0/5/130539078/43336a3da9.pdfIn PDF document text
    • http://cfstephenville.com/uploads/1/3/0/2/130288381/mogafo-sopupajazebatig-womevokaj-rilupulomevoju.pdfIn PDF document text
    • http://edsanseverinophotography.com/uploads/1/3/0/8/130815009/tosaxewili.pdfIn PDF document text
    • http://healthylifelabs.com/uploads/1/3/0/5/130590458/2542224.pdfIn PDF document text
    • http://csoenterprisesinc.com/uploads/1/3/0/4/130435596/c09bad.pdfIn PDF document text
    • http://www.jessicaferrucci.com/uploads/1/3/0/5/130588907/89e3a3c.pdfIn PDF document text
    • http://propertyforpeople.net/uploads/1/3/0/9/130969652/tikawisamatibagela.pdfIn PDF document text
    • http://planetarywellbeing.org/uploads/1/3/0/8/130814926/nepokobafa.pdfIn PDF document text
    • http://bizsprint.space/uploads/1/3/0/5/130551050/5477722.pdfIn PDF document text
    • http://www.maestroofceremonies.com/uploads/1/3/0/8/130874307/nigoxufelesexa.pdfIn PDF document text
    • http://www.jacksonholemountainruns.com/uploads/1/3/0/6/130621120/jefunukasofu-vodedipefurum.pdfIn PDF document text
    • http://www.soymates.com/uploads/1/3/0/4/130476120/zukisexaguwem.pdfIn PDF document text
    • http://www.thewateringcansupply.com/uploads/1/3/0/6/130639767/mulutabesug.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_off0000ec14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC14 9944 bytes
SHA-256: 176ae2030a7048903cb068690fcd96f3974c77fbb613e02bdf54ac8e9834e637

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