Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2d077320456848c…

MALICIOUS

PDF

66.6 KB Created: 2021-02-14 18:30:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 4636ed71af84d27deff7cec59abb5a3a SHA-1: 9a7b531616581d4c6a41790ad50e6c75366ee292 SHA-256: d2d077320456848c9982a1f07ce7abce63b9f98226467a3735644a9614e6aee0
126 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous links, many pointing to disposable hosting, and is identified as a link farm. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

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://bologen.ru/123?utm_term=holley+600+manual+choke PDF link annotation
    • https://kezidixujaroko.weebly.com/uploads/1/3/4/0/134040737/tavadep-mopibusenajafa-famal-wolesuwawefo.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/jhuhhjg/zefegixoxaxafegorif.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/YT3ujev/battle_for_wesnoth_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449776/normal_5fc91410a7bd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468530/normal_5fdc87b71feaf.pdfIn PDF document text
    • http://gemobaraza.iblogger.org/grammarway_3_without_answers.pdfIn PDF document text
    • https://womegirig.weebly.com/uploads/1/3/4/5/134506381/5154956.pdfIn PDF document text
    • https://nipoxumafoji.weebly.com/uploads/1/3/4/7/134717148/tugokeji-xiranupuw-dawoz-diruponobelol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374359/normal_5fd3d3366d346.pdfIn PDF document text
    • https://xonutupusuvulin.weebly.com/uploads/1/3/1/8/131871786/sebupab.pdfIn PDF document text
    • https://dojilosadokadog.weebly.com/uploads/1/3/4/8/134890500/xamimakuriwuge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zurovajij/driving_school_2018_apkmonk.pdfIn PDF document text
    • http://birabigipo.epizy.com/play_store_application_pending.pdfIn PDF document text
    • http://ruzuzis.rf.gd/balance_equations_worksheet_ks2.pdfIn PDF document text
    • http://likitaponuviv.rf.gd/jarowiwalaloxeru.pdfIn PDF document text
    • http://topajikof.epizy.com/platform_as_a_service_list.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_off0000c665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC665 5188 bytes
SHA-256: 559f283a71e40f89056528709a2adac291816dc589760137f7aa3f19976f4cad
font_01_sfnt_off0000d7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E9 10612 bytes
SHA-256: b0229165755c9d8032d13bfc80a49f56b4177f8b76fbce327f0da08926db776a

Open this report in the interactive analyzer, or submit your own file for analysis.