Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b744f761da35769…

MALICIOUS

PDF

80.3 KB Created: 2021-05-18 06:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c4de6afa553f98a931bafc68e11bdb30 SHA-1: e5c731f58d26c477f5b6c5fa8723db64792fd584 SHA-256: 2b744f761da35769177678f6ce00688612cdaacd7563bc174d49fd589216e69b
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating a link farm and an embedded URL pointing to 'lozipotod.ru'. The document body, though heavily obfuscated, contains text related to sending keyloggers to Android phones, suggesting a social engineering pretext. The ClamAV detection and ML classifier further support its malicious nature, likely acting as a downloader for a phishing or malware payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://lozipotod.ru/strik?utm_term=how+to+send+keylogger+to+android+phone PDF link annotation
    • https://posexabilibo.weebly.com/uploads/1/3/4/3/134350455/ribote.pdfIn PDF document text
    • https://balejumefem.weebly.com/uploads/1/3/0/8/130814467/1372511.pdfIn PDF document text
    • https://fatatarulawug.weebly.com/uploads/1/3/4/4/134474158/susufibebibane_xikegiw.pdfIn PDF document text
    • http://zenelis.iblogger.org/34069004614.pdfIn PDF document text
    • https://fexalikinuzumow.weebly.com/uploads/1/3/5/3/135324316/kevogek.pdfIn PDF document text
    • https://xobojurum.weebly.com/uploads/1/3/4/5/134599739/lugawebogelud_riwenesif.pdfIn PDF document text
    • https://zafubunemajuz.weebly.com/uploads/1/3/5/3/135314528/zinemasoziloz_rimadupowi_giseluxivo_tofetetapu.pdfIn PDF document text
    • https://sunakolezapomuj.weebly.com/uploads/1/3/4/6/134698053/832dee40a307.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zidenigad/guideline_tours_and_travels_kandivali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/075c21fc-44ae-4b69-99b1-28fca3dc8a11/werogosodagafitonuveb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1f41fcf-df6b-45e5-94ff-4e616da626c7/famimomepatu.pdfIn PDF document text
    • http://relikebatusexud.rf.gd/71823479704.pdfIn PDF document text
    • http://valopuloti.rf.gd/rfid_attendance_system_project.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/rofal.pdfIn PDF document text
    • http://zekarevuwo.epizy.com/wudumonitodozifimojelope.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/61385874297.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/82692561980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3438c4f-4473-4004-a9aa-5e551d6874c8/eragon_inheritance_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71043512-2f29-4570-ba43-23f2d5d1c28d/lakenofilexanunonorebu.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/kogebelanadorapodamam.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/xosasojadaximomufuwufego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4240d788-203d-4114-8178-72c6e0987c10/wufupovetimafa.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/donob.pdfIn PDF document text
    • http://mosemoxibug.rf.gd/12858578780.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AC 5440 bytes
SHA-256: f76eb8696ebff13d03c64bbf45136590da47f63d2b9861c32e86bc652ca72500
font_01_sfnt_off00010c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3E 11520 bytes
SHA-256: 8726c325c33270ff3d272e6d46a3c3ca418c9154b0025e8953b801161e867756

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