Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbbe889adfedbee4…

MALICIOUS

PDF

67.9 KB Created: 2021-02-12 11:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 4a9e519715795a3eb22b848e5b3ad216 SHA-1: f591a30df863225a4d853755faf8edeed575d720 SHA-256: bbbe889adfedbee470e37273a11f85abd77eb2e19c0e19a68a8af815133bb011
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One of the primary external links, 'https://druttle.ru/123?utm_term=sliding+gate+top+guide+roller', is suspicious and likely leads to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=sliding+gate+top+guide+roller PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423155/normal_5fdee3ebd300c.pdfIn PDF document text
    • http://copyrightram.net/the_best_tv_guide_appjr482.pdfIn PDF document text
    • https://japilulijerimu.weebly.com/uploads/1/3/0/7/130738614/suzew_xutafarum.pdfIn PDF document text
    • https://nigafabap.weebly.com/uploads/1/3/4/3/134377596/jukivo.pdfIn PDF document text
    • https://gimitowogavu.weebly.com/uploads/1/3/4/7/134746983/6238784.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/vezumobigodub/temorenowugepabukixe.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/one_less_bell_to_answer_glee_episode.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/lurenijexajanuk.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/fronted_adverbials_worksheet_ks1.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/land_administration_and_management.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/document_management_system_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/zimijetewijotilerofi.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/irs_ira_tax_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/how_to_rename_sheet_name_in_vba.pdfIn PDF document text
    • http://wiwekire.epizy.com/alta_frecuencia_estetica.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_off0000cae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE0 5052 bytes
SHA-256: 831700b9826cb4721a559e5d29e2861bc73879d1c97d738a818f461db5c2eaf4
font_01_sfnt_off0000dc1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1C 10880 bytes
SHA-256: 310ab69a0d860d5ca614a6b381aa192edcd470ce5d1bf52fe99401f7c0cca4b4

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