Malicious PDF — malware analysis report

Static analysis result for SHA-256 170b003462bc7095…

MALICIOUS

PDF

77.0 KB Created: 2021-03-18 06:33:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 42093b81b5a4c128851fa246baf0d5c8 SHA-1: da3aaf1a0d43d13e875cc513286afe414e8a3bee SHA-256: 170b003462bc70955881be4559c3accb8b5c3b3f0ef230d7820c62974a193629
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 embedded URLs pointing to disposable hosting and link farms, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, contains keywords related to salary and employment, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dugedepap.ru/strik?utm_term=emergency+med+pa+salary PDF link annotation
    • https://mevemedetu.weebly.com/uploads/1/3/1/8/131871578/tesukofena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489976/normal_60460fa0a31ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422367/normal_600ffb3a64d88.pdfIn PDF document text
    • https://fixafaren.weebly.com/uploads/1/3/0/7/130738550/gexafewani.pdfIn PDF document text
    • http://jedobafupaxuxu.iblogger.org/1153965792.pdfIn PDF document text
    • https://lidawutoroliv.weebly.com/uploads/1/3/1/8/131872032/fbcd9566babf6f6.pdfIn PDF document text
    • https://jokosofaka.weebly.com/uploads/1/3/4/4/134436044/6123341.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368245/normal_5ff55b8ef2782.pdfIn PDF document text
    • https://zewabezasakaru.weebly.com/uploads/1/3/4/5/134593707/aa6d8bbcc5aa.pdfIn PDF document text
    • http://zonixutazexe.iblogger.org/palladio_allegretto_piano_sheet_music.pdfIn PDF document text
    • http://juvivufokif.22web.org/lakali.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403259/normal_60021bbede0b8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e65555d2-e60b-43ee-86cd-541a0f60dc58/60909026734.pdfIn PDF document text
    • http://fozikabev.epizy.com/wheel_of_fortune_answer_cheats_living_things.pdfIn PDF document text
    • http://ferodokibaw.epizy.com/diary_template_ks1_tes.pdfIn PDF document text
    • http://pavasokunise.epizy.com/11331539916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9788bac-3b20-4850-af97-656787fa7b66/73259236650.pdfIn PDF document text
    • http://tisudaxutuz.epizy.com/ijazat_mp4_video_pagalworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f0e4350-a61e-4a4b-ad34-d1ec6785dedc/atlas_copco_900_cfm_compressor_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da2cf230-2915-4251-a247-37b1823b9bfe/88195198435.pdfIn PDF document text
    • http://vagakidid.epizy.com/shinee_world_concert_iv_dvd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4234165d-05d2-4b23-9ee6-4e1f89faf87a/total_gym_xl7_home_gym_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/347f44c5-a592-4517-bd42-7a9f9f4ec1a7/13935832001.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF97 5452 bytes
SHA-256: fc3514be6180241cad343c3fb1eff1e1437178f2ca82f92695484b8e27d7a27b
font_01_sfnt_off00010214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10214 10844 bytes
SHA-256: a7e8dbd1063fcefdb8d8f7668171cb33d469e4ec69b891ac4d78bc81baf8231d

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