Malicious PDF — malware analysis report

Static analysis result for SHA-256 01eace8f91122b2d…

MALICIOUS

PDF

77.6 KB Created: 2021-03-21 09:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: b330de5fdda59d48a2042cdc842b5c1a SHA-1: dfaa5f08b4fb75f9c99439affadda1b07eedfe34 SHA-256: 01eace8f91122b2df6468a4420fa9262b4eb3eaf850bb88cb6ed9d4d2fb8598c
186 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and numerous external URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/wix?keyword=robot+unicorn+attack+unblocked+weebly PDF link annotation
    • http://jafoxidulez.mypressonline.com/88566089897.pdfIn PDF document text
    • http://tibagisuminove.sportsontheweb.net/books_of_orhan_pamuk.pdfIn PDF document text
    • https://nosisakapu.weebly.com/uploads/1/3/4/7/134773138/wonebe.pdfIn PDF document text
    • https://wixokaregojes.weebly.com/uploads/1/3/2/6/132681478/231874.pdfIn PDF document text
    • http://nuderoxaxik.22web.org/tanulesedixowogukozomuf.pdfIn PDF document text
    • https://xafinuwexedigu.weebly.com/uploads/1/3/1/3/131379324/360c9d14391fd8d.pdfIn PDF document text
    • https://ropexosuwewi.weebly.com/uploads/1/3/1/3/131380205/48db0349f.pdfIn PDF document text
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/9694366.pdfIn PDF document text
    • https://domilejoxu.weebly.com/uploads/1/3/4/5/134529458/bogomezenakoken-fapajidixa-kezesade.pdfIn PDF document text
    • https://dazuvekojuj.weebly.com/uploads/1/3/4/8/134863877/punixejabawako-xegozoleteko-najoreluv-dokiko.pdfIn PDF document text
    • https://zunotebizi.weebly.com/uploads/1/3/4/6/134648513/waxazivasaw_dapibarexego_nuker.pdfIn PDF document text
    • http://fijexojor.getenjoyment.net/pimuwevemeratomezas.pdfIn PDF document text
    • https://popibixa.weebly.com/uploads/1/3/4/7/134745137/5188334.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/43333793576.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/dovulavavo/ruwupolamile.pdfIn PDF document text
    • http://mukovixajetunex.epizy.com/conjunctions_in_english.pdfIn PDF document text
    • http://vakogez.myartsonline.com/wholly_sanctified_a_b_simpson.pdfIn PDF document text
    • http://xeduniramabal.rf.gd/83861327172.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/26173800156.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/jowozapapupasegenolux.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/school_supply_stealer_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/boxers_and_saints_ending.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_off0000efff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFF 5160 bytes
SHA-256: e9315be92934c8d102e3f7fe72b9f632be586cd9f1911c4854fd44b229e63679
font_01_sfnt_off000101b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B7 11548 bytes
SHA-256: 17f8f1713e75941fd8658af16eabbd266c51ec43eca28b5525b955220762a71a

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