Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2b8bf4e55f0949…

MALICIOUS

PDF

86.5 KB Created: 2021-05-08 07:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 187c358113551e4a722bb2786ebbf47b SHA-1: e79966387efe6c34a11dca7b4f9955baa5f92cbc SHA-256: ed2b8bf4e55f09493d528182e84e16d272b67062717609332c0264c211dfbe08
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used for phishing or to serve a secondary payload. The PDF's structure and embedded content suggest it is designed to deceive users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://mezovuduw.ru/strik?utm_term=orquidea+que+es+simbolo+nacional+de+colombia PDF link annotation
    • http://biteroz.iblogger.org/14892596913.pdfIn PDF document text
    • http://nexipufogavajid.getenjoyment.net/86450372611.pdfIn PDF document text
    • http://alisabor.design/93684319075y9xtw.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/ohio_state_university_medical_center_map.pdfIn PDF document text
    • http://viewcreditscore.info/how_to_convert_multiple_png_images_to_jpgz3s6j.pdfIn PDF document text
    • http://wabefovelixi.66ghz.com/guideline_contrast_induced_nephropathy.pdfIn PDF document text
    • http://rasprodavaika.ru/fujadujivufigigobinufux1258x.pdfIn PDF document text
    • http://filuxunokenobud.mygamesonline.org/autocad_2020_full_tutorial.pdfIn PDF document text
    • http://begdas.space/rovedufomuxukepabaxusexyu907.pdfIn PDF document text
    • http://wuzotevoxed.22web.org/management_of_new_onset_atrial_fibrillation_guidelines.pdfIn PDF document text
    • http://com-connexion.xyz/968843081739vbze.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/download_campus_toeic.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/61127277186.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://43081b45-6e48-4b43-b724-9328fda377ae.filesusr.com/ugd/26481d_e8e63d6c245f42bf8910bf6278ddf33b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e88e0177-1da4-4f2e-8276-a43293fec2dc/computer_hardware_stores_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cffc8e66-75b8-44d2-9f03-b2d6bb7c263a/html_and_css_templates_with_source_code_free_download.pdfIn PDF document text
    • http://xokawetuvon.epizy.com/guide_de_bonne_pratique_de_fabrication.pdfIn PDF document text
    • http://xekibedeba.rf.gd/emulation_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f6643d0-91da-45a8-adc0-dad918420732/kerapunif.pdfIn PDF document text
    • https://21c505bb-01ca-4817-a549-4ed1ebba5040.filesusr.com/ugd/7d7105_dd83aa98912d4f50ba0b768042cf8878.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/24b382be-d775-430d-952a-26a916cde646/zexofazudituvozilopol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6535b278-a752-486e-9f72-31f216df383a/dd_3.5_pc_templates.pdfIn PDF document text
    • http://lorenivi.rf.gd/voltage_divider_rule_examples.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_off00010f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F27 5376 bytes
SHA-256: 16eca1b08196d968aa0b20ccbcd7c42e3bc3e034af5ca923b9727ca8ef5c16ef
font_01_sfnt_off0001214d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1214D 12764 bytes
SHA-256: 46b7df5f325c7b8dd3d94cac3570e940a72201f9639117d453938062b23c2ab3

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