Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e8461024bbc197…

MALICIOUS

PDF

82.3 KB Created: 2021-03-23 08:54:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 5c837391640fa0ca99489a43b92d5d2b SHA-1: 00a3d0b9318d3eb4d4a38347aa0eac7c7da2099f SHA-256: 00e8461024bbc197b758d964490a3d4882c1a43ea964930c5fbb650f4eca559d
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many hosted on disposable domains or link farms, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, indicates a lure related to a 'laboratory report', aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=laboratory+report+3+cellular+structure PDF link annotation
    • https://cdn.sqhk.co/sazalevimit/h7bibij/60604978763.pdfIn PDF document text
    • https://cdn.sqhk.co/delobepaziw/Qjafjak/cosplay_mileena_mortal_kombat.pdfIn PDF document text
    • http://sivelural.mygamesonline.org/bufusukotawatoxovan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443326/normal_6031d367c7a50.pdfIn PDF document text
    • http://sozaxesugoj.mywebcommunity.org/libro_cerebro_de_pan_descargar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5fdc7425348fe.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/agjwhhw/15502143454.pdfIn PDF document text
    • http://vinadulateg.22web.org/vinaronuvojagireles.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367687/normal_5ffa122e2b77a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451217/normal_5fd9e9a79a664.pdfIn PDF document text
    • http://filuniguwol.22web.org/90061438794.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/bubisifapagefe/reading_ielts_academic_practice_test.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/19071425615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d33748c-b2bd-4da5-b79f-edc83dff25fb/87227227940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88596505-1697-4b14-947f-8aa225657783/how_to_program_a_hampton_bay_fan_remote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/811f1859-f49d-4762-8616-8ccc92cdc21b/ragizitesu.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/pasipi.pdfIn PDF document text
    • http://zasadawizeloz.epizy.com/garara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48c59976-9d9e-4ce7-9a4d-4586fc58b76f/graco_duet_sway_lx_swing_with_portable_bouncer_instructions.pdfIn PDF document text
    • http://wizunanaxenuxi.rf.gd/context_clues_worksheets_for_grade_4.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_off0001042c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042C 5272 bytes
SHA-256: d6c954552087e3612b251edd037fc1c913b821dcae17bf66fe573daf713b0e7a
font_01_sfnt_off00011631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11631 11024 bytes
SHA-256: f84683f031e8af3ea238e9212c55ed1eba37840b1b54dce9895cf4d4e80f33be

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