Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af9d8b770c5f7e5…

MALICIOUS

PDF

39.8 KB Created: 2020-04-03 06:48:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2021-06-13
MD5: 875dfdcb01ac4733ec8c95cf1a7ec474 SHA-1: e3da0ccf15bf632ec5ca88298d40d1516f6024a4 SHA-256: 2af9d8b770c5f7e52d067246cd6e7e84f805fa87793e076f754753f35e6d54ed
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on numerous domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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://elevatorwars.net/uploads/1/3/0/5/130589348/130589348.html#uf+field+and+fork+hours PDF link annotation
    • http://bonniejohnsonlaw.com/uploads/1/3/0/7/130739746/8d5080534df3.pdfIn PDF document text
    • http://rmlegaldocumentpreparation.com/uploads/1/3/0/6/130604414/menofuki-rufomekemifevu-doborezabobino-besesovatomatu.pdfIn PDF document text
    • http://wavingsun.com/uploads/1/3/0/3/130379155/2635490.pdfIn PDF document text
    • http://cdacarpetcleaning.net/uploads/1/3/0/6/130639155/tigatamozamepitopol.pdfIn PDF document text
    • http://expare.com/uploads/1/3/0/7/130739621/wumow-bajalu.pdfIn PDF document text
    • http://biznesiyt.info/uploads/1/3/0/7/130740066/f852fbb2520.pdfIn PDF document text
    • http://emilylindin.com/uploads/1/3/0/7/130776054/5533051.pdfIn PDF document text
    • http://dysoncreativeportraits.com/uploads/1/3/0/7/130738819/wumowomedamof.pdfIn PDF document text
    • http://memory4money.com/uploads/1/3/0/4/130488820/vimowa_mozilu_rilurag.pdfIn PDF document text
    • http://ballisticsusa.org/uploads/1/3/0/8/130813787/nuluxejejiwo.pdfIn PDF document text
    • http://thedianavargas.com/uploads/1/3/0/8/130874281/44a75a6dae6acb5.pdfIn PDF document text
    • http://usinoaaf.org/uploads/1/3/0/4/130490314/c914539d.pdfIn PDF document text
    • http://firstmissionarybaptistchurcheastboyles.org/uploads/1/3/1/4/131437640/renupowixuvuv_laxuropuru_tetamuzolefude_putaki.pdfIn PDF document text
    • http://sjcounselingandwellness.com/uploads/1/3/0/6/130620549/mobapudo-tuxem-dajorop-zexisalita.pdfIn PDF document text
    • http://soque.net/uploads/1/3/0/2/130289620/temumukalapili.pdfIn PDF document text
    • http://zensai.in/uploads/1/3/0/2/130287239/7ebbf32.pdfIn PDF document text
    • http://stressburnout.net/uploads/1/3/0/4/130490488/d6c97db533.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7348 7880 bytes
SHA-256: 644e9c3559f05fa75563a51576b8924b636cf84996eeff056085918997cc079f

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