Malicious PDF — malware analysis report

Static analysis result for SHA-256 53e6c3f54a7d6070…

MALICIOUS

PDF

84.3 KB Created: 2021-03-18 01:14:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 03da49c84ecf91530891a9ac43945d0d SHA-1: dcb1d422a0a5bd0b16a753ea6b571b7417b9819e SHA-256: 53e6c3f54a7d6070c5596c3b81871bd3a3ef05654c3ebe947852e385c4a43921
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The embedded URLs suggest a link farm designed to distribute malicious content. Although no scripts were explicitly extracted, the PDF structure and the nature of the URLs indicate an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=death+in+venice+and+seven+other+stories+pdf In PDF document text
    • http://xipodijajul.sportsontheweb.net/92475786694.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/berlin_criteria_ardsw300x.pdfIn PDF document text
    • http://brumbum6.xyz/54699382394cc5y9.pdfIn PDF document text
    • http://inmyshtangen.xyz/nadepeft6nap.pdfIn PDF document text
    • http://islta.fun/gaxoredosarapegoxzgpt3.pdfIn PDF document text
    • http://futup.ru/char_broil_performance_2_burner_tru_infrared_grill_cover5pc54.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zezofakarol.myartsonline.com/3203720615.pdfIn PDF document text
    • http://temomel.rf.gd/2014_cadillac_srx_4_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb5fece9-9e24-41c4-9507-532b588eba83/zisugefemebonulurebafex.pdfIn PDF document text
    • http://fafuwite.epizy.com/55266170072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5e765a7-f88c-4c9e-87a3-3d7f9acb6952/opentx_companion_2.3.9.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/how_much_does_it_cost_to_replace_a_honda_pilot_transmission.pdfIn PDF document text
    • http://ziwufuv.rf.gd/csi_300_index_factsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/2000_polaris_sportsman_400_owners_manual.pdfIn PDF document text
    • http://najenovatuxi.rf.gd/additional_information_form_inz.pdfIn PDF document text
    • http://telifujovemevo.atwebpages.com/45335190502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/becf4e3c-e5e8-47a7-8ce2-4885fdb7c1c3/how_to_make_a_pistol_shooting_stand.pdfIn PDF document text
    • http://maviwapas.epizy.com/resident_evil_4_hack_apk_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/duvuladefusiposopev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1f5ded7-aa1a-40b3-967c-9c4cf98b2cf6/is_general_physics_1_hard.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_off00010b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B42 5268 bytes
SHA-256: fbf701b66f479772901a9cb75f96df56f0fae7d9f237d335b095487677954b3b
font_01_sfnt_off00011d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D31 11932 bytes
SHA-256: 9bee54ee237292be2a55335c44ad9a39399d25f095635ef0822ecda189d2af03

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