Malicious PDF — malware analysis report

Static analysis result for SHA-256 242721e71b526371…

MALICIOUS

PDF

94.9 KB Created: 2021-04-06 05:55:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 056b0df59a07536dcc4b1b1c53389b60 SHA-1: 152fe4fd5ecc5b870e766c9f09534f9f3d7e7150 SHA-256: 242721e71b526371b6a75ccc4c53b50ac7e5345029a8a5dc75f87e0a635bad1d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a common phishing lure, likely attempting to redirect users to malicious sites for credential harvesting or further payload delivery.

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://xajibur.ru/123?utm_term=brand+identity+creative+brief+template PDF link annotation
    • https://cdn.sqhk.co/letinumi/vgbiamD/2985117504.pdfIn PDF document text
    • https://cdn.sqhk.co/gimexigerub/phhgijc/uefa_champions_league_2019_results_and_fixtures.pdfIn PDF document text
    • http://abanca-electronica.com/volugejaxivenebcqr.pdfIn PDF document text
    • https://cdn.sqhk.co/feletitami/ie7hcSs/nofudesetodefibek.pdfIn PDF document text
    • https://cdn.sqhk.co/siganewita/zMqThaj/no_sew_jeans_button.pdfIn PDF document text
    • http://phillipen.online/14212170354phyec.pdfIn PDF document text
    • http://fibilif.iblogger.org/11759518347.pdfIn PDF document text
    • http://j3vnci4.xyz/fallout_wasteland_warfare2ur3t.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/f656eeaa-1a42-49bf-b96a-10f63ad730ea/ryobi_9_amp_7-1_4_in._miter_saw_with_laser.pdfIn PDF document text
    • http://zufewutakukaluk.rf.gd/what_are_the_steps_involved_in_capital_budgeting_process.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/articles_of_incorporation_template_for_non_profit.pdfIn PDF document text
    • http://wipojijize.rf.gd/multiplication_chart_1_12_printable_with_answers.pdfIn PDF document text
    • https://6c403777-3bdb-430d-a4ca-23d5788374d5.filesusr.com/ugd/e0034b_c2f3f96e39d44e588ae729c2fe4e6fe6.pdf?index=trueIn PDF document text
    • http://pagupim.epizy.com/74240783972.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/4468185836.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7334e5a5-49fb-48b3-9243-68f363383a4c/how_to_be_mechanical_design_engineer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6edf4451-6432-4296-b5fa-8e051a41c1cf/how_to_use_shark_rotator_vacuum_attachments.pdfIn PDF document text
    • https://2b12d24f-0c9a-4a32-b427-430aba395f0c.filesusr.com/ugd/6cfe90_75879a16914646e888d8ed24e958b3a6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e483e55f-7845-4b25-9b51-c6e576c8a6d5/ti_84_plus_online_calculator.pdfIn PDF document text
    • http://vimedunofonuw.rf.gd/efectos_secundarios_dela_metformina_clorhidrato_850_mg.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_off00013657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13657 5472 bytes
SHA-256: bfcec14130fc93f907c0e40fbbb8b71356e9de888f16d01fa637ae7240bda4c4
font_01_sfnt_off000148ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148EF 10956 bytes
SHA-256: a66a03f2557a3a51ec581173d18167eb519b2b3f7802a1c84b049e7342393b7d

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