Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd2ba2e79fae593…

MALICIOUS

PDF

41.8 KB Created: 2020-03-23 16:42:40 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 104fdd143035ffb25b015c732cfff434 SHA-1: efa3f264af813141caee72479acc873711670fcf SHA-256: 1bd2ba2e79fae5931facd183ab9a835a944bbbbf46d3347d59e959fdda16247d
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of external links, identified as a PDF SEO link farm. The primary URL points to a software download lure, suggesting a phishing or social engineering attempt. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the link farm and lure indicate a likely attempt to redirect users to malicious sites or downloads.

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://advance-it.net/uploads/1/3/0/6/130639553/130639553.html#veho+discovery+vms-001+software+download
    • http://tonygezziportfolio.com/uploads/1/3/0/7/130775936/lelasa.pdf
    • http://newpressrelease.com/uploads/1/3/0/7/130739206/xepirerul-rufuxizalinu-nedikisasiz-jinovogetokap.pdf
    • http://thestyletaco.com/uploads/1/3/0/5/130539496/buzivofolozute.pdf
    • http://jigsawcanvas.com/uploads/1/3/0/4/130435819/tufividuwumukoxexap.pdf
    • http://haydeecanovas.com/uploads/1/3/0/5/130547116/voxiviboxelil.pdf
    • http://christinahankinsart.com/uploads/1/3/0/4/130483552/9650523e69831d.pdf
    • http://bayoflights.com/uploads/1/3/0/6/130620945/lalutubefuwidewifuj.pdf
    • http://negocioconestilo.com/uploads/1/3/0/5/130588342/6242194.pdf
    • http://khdggaw.com/uploads/1/3/0/2/130288639/55695fb4a.pdf
    • http://najlogo.co.uk/uploads/1/3/0/5/130550716/ea83a.pdf
    • http://biglifecc.com/uploads/1/3/0/2/130271116/ropub.pdf
    • http://tracyprigmore.net/uploads/1/3/0/5/130551991/panome_nerivumiwa_keganopol.pdf
    • http://envision-film.com/uploads/1/3/0/7/130775831/748caaa139a44.pdf
    • http://whereismyeraser.com/uploads/1/3/0/6/130620801/gejosawatulidig.pdf
    • http://patlyonscreations.com/uploads/1/3/0/2/130292073/vasasewezimoloxorok.pdf
    • http://popsinc.net/uploads/1/3/0/5/130551351/tikonimemapisekutes.pdf
    • http://thebarkwagon.com/uploads/1/3/0/3/130313198/sunukesejovuximud.pdf
    • http://managementcapability.org/uploads/1/3/0/9/130969636/4437848.pdf
    • http://masonrystonework.com/uploads/1/3/0/4/130435652/lorekararabelupive.pdf
    • http://plantsforpermaculture.com/uploads/1/3/0/6/130604749/1949835.pdf
    • http://www.projecthindsightmemorial.com/uploads/1/3/1/1/131163763/6006839.pdf
    • http://www.opendoorboston.com/uploads/1/3/0/7/130739348/jemuw_dijexetaduva_sudusewolopig_relem.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000795f.bin
030c887dfede903641b1f88f9869fe3fd546b9c7e9e3073931358f7ac0113534		 pdf-font-stream PDF embedded font (sfnt) at offset 0x795F 8272 bytes

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