Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2af84d803a26264…

MALICIOUS

PDF

72.0 KB Created: 2021-03-19 05:39:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: fc08231b833db3273ede91eba917bb45 SHA-1: 695ac23c512f41724aa1793639f5b1c66fb8a507 SHA-256: b2af84d803a262649a86e01b69de48dc24f6544ab4050f7c65a17e5acb919b8b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and one specifically uses 'interview evaluation sheet example' in its UTM parameters, suggesting a phishing or credential harvesting lure. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malware distribution or phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/123?utm_term=interview+evaluation+sheet+example PDF link annotation
    • http://ooovseanalizi.ru/ridgid_12_inch_dual_bevel_sliding_compound_miter_sawjoijd.pdfIn PDF document text
    • http://lnstagramcopyrightmanagement.com/73065497711se6i.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/how_to_train_your_dragon_1-3_dvd.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/41632690068hcpzu.pdfIn PDF document text
    • http://tafugegajotu.mygamesonline.org/39580813315.pdfIn PDF document text
    • http://jepenufi.getenjoyment.net/al_quran_digital.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452852/normal_5fdfc616dad1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411001/normal_60461c4ae1db6.pdfIn PDF document text
    • http://elerctum.org/murup4xbnu.pdfIn PDF document text
    • http://sipoxamux.22web.org/contemplate_synonym_formal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xekazaz.myartsonline.com/the_500_greatest_songs_of_all_time_list.pdfIn PDF document text
    • http://vaxuxabupuj.epizy.com/ansys_icem_cfd_tutorial.pdfIn PDF document text
    • http://rokuwesepetab.rf.gd/81610485560.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/amana_microwave_light_bulb.pdfIn PDF document text
    • http://wexalaz.epizy.com/rawelap.pdfIn PDF document text
    • http://pegumagagi.epizy.com/bleacher_report_gridiron_heights_season_3.pdfIn PDF document text
    • http://vowatul.rf.gd/viregepadamu.pdfIn PDF document text
    • http://bofalonulupujo.rf.gd/how_to_program_westinghouse_outlet_timer.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_off0000df60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF60 5216 bytes
SHA-256: adfbe5aab19ce239250b6e5966244851efbeca2e62c0c54fd9deb95ca915d8a2
font_01_sfnt_off0000f107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF107 9988 bytes
SHA-256: d0c5c30c66272ec02f827d5d2dce9ee52617e2b69d707fbb6ad93f7aa6274988

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