Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea9e714ce027133…

MALICIOUS

PDF

98.8 KB Created: 2021-05-15 00:07:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: caef22e4d9b068ae55195d3f595373c5 SHA-1: 3c24d96ee2128f0131c206e47b20ffbec9cb3661 SHA-256: dea9e714ce027133d811e1273a4227df3bacc5764080e2c629fe8b656525b6f7
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a link farm on disposable hosting, 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 URIs are indicative of a common phishing lure, likely attempting to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/strik?utm_term=when+you+reach+me+rebecca+stead+review PDF link annotation
    • http://santecmb-sarl.com/xofagetki2y.pdfIn PDF document text
    • http://drive4mclaneaustell.com/6476272191dowse.pdfIn PDF document text
    • http://wide-mean.top/allahabad_high_court_judgement_ordervr55e.pdfIn PDF document text
    • http://lbaranaydin.com/70879079335zn0b1.pdfIn PDF document text
    • http://rasprodavaika.ru/human_resource_management_linking_strategy_to_practice8qqb9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suvoxezol.rf.gd/cancer_de_pulmon_causas.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/bhaiya_ji_superhit_full_movie_openload.pdfIn PDF document text
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_68e6f004b7f5463fad87f06f5d05ad6e.pdf?index=trueIn PDF document text
    • https://189c2d36-84ff-4b81-9465-96c33c1d3b91.filesusr.com/ugd/35ddae_894f33d744dc481085adab6bd483c8ce.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9faee45d-1e36-4639-9883-01df40f95620/advanced_algebra_writing_equations_of_transformations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c08e625b-5c94-4ed1-989c-a1e0d24246f4/properties_of_exponents_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01b28fa5-fe4a-4068-8dfb-d29657708e6c/skyrim_xbox_360_tips_and_tricks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/627d5c18-847f-4dec-a086-87fa01c88057/rca_cmbt004_4gb_bluetooth_mp3_player_-_blue.pdfIn PDF document text
    • https://50e0a74f-e7a5-4ac3-a7a6-4cdd7b1ad00e.filesusr.com/ugd/8a9d9f_e8b0715c7c3e449783fe5cc0c2b10675.pdf?index=trueIn PDF document text
    • https://e0bfa911-60eb-4c53-bd8d-ceec25156dfb.filesusr.com/ugd/0a052f_f46f305aabab4198a7477f46c52b781b.pdf?index=trueIn PDF document text
    • https://2c5a832e-93c4-4ab0-bef0-969ef348d747.filesusr.com/ugd/cc5daa_ac51bd8b2b764e79825a09c474def1e7.pdf?index=trueIn PDF document text
    • http://revobisamapekuz.epizy.com/96694987611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17cb4331-8459-4165-857a-102ecaff098d/what_is_the_significance_of_the_great_society_programs.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/2930349779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ada6d758-37ca-4452-be29-48c9e98ba51d/19811849363.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_off00014264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14264 5552 bytes
SHA-256: 6b79232038bda98d91a681e009b882f0835d5d43c1b413f4e7ccc851deeaaf7b
font_01_sfnt_off00015534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15534 12156 bytes
SHA-256: 8b39cff3ef3b3d06b7b9957b46b48e2fc2fbb50da5735e5044e05a7825d528ba

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