Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae7473a9159adbd…

MALICIOUS

PDF

39.2 KB Created: 2020-05-23 04:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 6cb0774b70094edf642e218fb5ca8d44 SHA-1: 69694ba01049fee586d805a81efc040f436c26fe SHA-256: cae7473a9159adbdec6c1ea0996ead0e8f8eac8608b81aeff02e3739490b3b11
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. This pattern is indicative of a link farm designed to obscure the ultimate destination or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, suggesting a campaign that leverages SEO techniques to lure victims. No scripts were extracted from this sample, and the document body is heavily obfuscated.

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://mantissecurity.us/uploads/1/3/0/5/130590287/130590287.html#90095+jay+rock PDF link annotation
    • http://970dodoha.com/uploads/1/3/1/0/131070030/jiwifebol.pdfIn PDF document text
    • http://wakefieldmiddleschoolpta.org/uploads/1/3/0/4/130435694/sifixatewedezifub.pdfIn PDF document text
    • http://dazzlinggoddess.com/uploads/1/3/1/4/131438012/8138089.pdfIn PDF document text
    • http://classadesign.net/uploads/1/3/0/6/130604904/2345298.pdfIn PDF document text
    • http://rimassageworks.org/uploads/1/3/1/4/131438150/5742943.pdfIn PDF document text
    • http://limbojewelryblog.com/uploads/1/3/1/4/131406544/1059500.pdfIn PDF document text
    • http://seelenleben.ch/uploads/1/3/0/8/130813694/gijoludegor.pdfIn PDF document text
    • http://redstreet-legalgolf.com/uploads/1/3/0/7/130740186/90e57e81.pdfIn PDF document text
    • http://specialtycoaching.net/uploads/1/3/1/4/131407736/midagujopozug.pdfIn PDF document text
    • http://apus-arts.com/uploads/1/3/0/5/130547771/sidemefuliwobenozen.pdfIn PDF document text
    • http://reliablegeneralmaintenance.com/uploads/1/3/0/7/130775328/pusewijopatu.pdfIn PDF document text
    • http://mta-sts.jtagaro.com/uploads/1/3/1/4/131453016/932454be0ea.pdfIn PDF document text
    • http://libertylogisticscenteri.com/uploads/1/3/1/6/131636664/todogu-fibapabufaver-rakutotome-lozuxemagep.pdfIn PDF document text
    • http://dwfiwfi.com/uploads/1/3/1/4/131454556/wowobatuponubedibur.pdfIn PDF document text
    • http://thefrights.shop/uploads/1/3/0/2/130289409/suwelunafedi.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 7

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_off00006cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD1 10856 bytes
SHA-256: e3e37ff83177ad824570afb0d4fb55f8daa26f690021e3528008541605f5af7c

Open this report in the interactive analyzer, or submit your own file for analysis.