Malicious PDF — malware analysis report

Static analysis result for SHA-256 0525ba1ed009f849…

MALICIOUS

PDF

37.2 KB Created: 2020-03-27 02:16:29 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 0697bc673d77532def4cc74aa4b95d4d SHA-1: 74ae21a05990765458c58eb0539bbea08e968038 SHA-256: 0525ba1ed009f849902e742e2e6adcd801af945043789df58a968cb77d40a3f7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though heavily obfuscated, contains references to URLs and potentially decoy text like 'Sony rm-vlz620 codes'. The presence of numerous links suggests an attempt to manipulate search engine results or redirect users to malicious sites. No scripts were extracted, but the PDF structure itself facilitates the linking behavior.

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://reefprogear.com/uploads/1/3/0/5/130543320/130543320.html#sony+rm-vlz620+codes PDF link annotation
    • http://taipei-hight-club.com/uploads/1/3/1/4/131406049/a3cb52.pdfIn PDF document text
    • http://mail.fesyennona.com.my/uploads/1/3/0/2/130291589/gazuxarugi-sofogoba-nekubil.pdfIn PDF document text
    • http://danielbendicksontruckingllc.com/uploads/1/3/0/9/130969360/moxaduberanom_wuwagabolowik_lasijaz_koxonoxozexebaw.pdfIn PDF document text
    • http://nahsesouthflorida.org/uploads/1/3/0/4/130483862/3727263.pdfIn PDF document text
    • http://aroundtheworldtravelcenter.com/uploads/1/3/0/6/130620961/4399459.pdfIn PDF document text
    • http://divinelyinspired.ca/uploads/1/3/0/3/130313390/3617761.pdfIn PDF document text
    • http://protopcbassembly.com/uploads/1/3/0/7/130739949/vivulakaw.pdfIn PDF document text
    • http://sadiesugarman.com/uploads/1/3/0/7/130740080/sabowifelu-timijodekuvi-tifatajavev.pdfIn PDF document text
    • http://panimals.com/uploads/1/3/0/5/130588570/zonuw-bimasafogevasi.pdfIn PDF document text
    • http://www.runninsranch.com/uploads/1/3/0/3/130323182/tigulodojadas.pdfIn PDF document text
    • http://www.oaklandempowermentscholarshipprogram.com/uploads/1/3/0/6/130622073/4939810.pdfIn PDF document text
    • http://tuorent.it/uploads/1/3/1/0/131070872/dupagutatuwixemixazo.pdfIn PDF document text
    • http://ikwildieboot.nl/uploads/1/3/0/6/130621985/tumesak.pdfIn PDF document text
    • http://thingsthatmakeyougo.com/uploads/1/3/0/3/130379377/83a58fc9c.pdfIn PDF document text
    • http://mail.wilsonbaseballcamp.com/uploads/1/3/0/3/130313411/murorop.pdfIn PDF document text
    • http://creaturesfromspace.com/uploads/1/3/0/5/130540937/xibeberif.pdfIn PDF document text
    • http://planovationsmedia.com/uploads/1/3/1/1/131163512/tesakiduk.pdfIn PDF document text
    • http://madbro.co.uk/uploads/1/3/0/4/130435962/7122998.pdfIn PDF document text
    • http://contact.dng.ie/uploads/1/3/0/6/130604791/pafuz.pdfIn PDF document text
    • http://sharonostrov.com/uploads/1/3/0/7/130776260/b5d27806aab5f4a.pdfIn PDF document text
    • http://electrobelle.be/uploads/1/3/0/6/130621327/nisowokexejusudabud.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 8

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_off00006875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6875 7948 bytes
SHA-256: 0f23c63e0d0a4dbaa3cfadea6c9ef5521311b6c8a3bac0866a8427b631ffee65

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