Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae694bf20023230…

MALICIOUS

PDF

84.9 KB Created: 2021-03-20 17:58:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 06e778e16949e44bc3bcdaa497da59b1 SHA-1: fd65cc59c8d96f208c2aee613785111569f954cb SHA-256: 1ae694bf200232309d20716e9019559fa51f3a17775bcf39b2ecb3e902e3ef6d
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the presence of numerous external URLs points towards potential redirection to phishing sites or malware downloaders.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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://jumiwimov.ru/award?keyword=beginners+excel+pdf PDF link annotation
    • http://watogoda.mypressonline.com/68846135546.pdfIn PDF document text
    • https://genezekanoz.weebly.com/uploads/1/3/1/4/131413678/banoxikonin.pdfIn PDF document text
    • https://delimilakemasuj.weebly.com/uploads/1/3/4/4/134400920/1b7e217e.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/68102324055.pdfIn PDF document text
    • https://safuziketuxoxu.weebly.com/uploads/1/3/0/8/130814855/sitevubirusurukap.pdfIn PDF document text
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/5926155.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/massey_ferguson_3545_decals.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/sansa_clip_wont_charge.pdfIn PDF document text
    • https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/c50370e487da20.pdfIn PDF document text
    • https://zapidowezagija.weebly.com/uploads/1/3/4/0/134041255/694c6d288b7a8.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/3b1a4412b6936dc.pdfIn PDF document text
    • https://kasewipiliri.weebly.com/uploads/1/3/4/9/134901701/norovedevov.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/bring_up_a_genius.pdfIn PDF document text
    • http://lugirepapirizo.scienceontheweb.net/zutizixolided.pdfIn PDF document text
    • https://bodupakodekafas.weebly.com/uploads/1/3/2/6/132680796/6a4bce81713a8e.pdfIn PDF document text
    • http://zuvatewovu.scienceontheweb.net/who_was_the_first_female_shaheed_martyr_of_islam.pdfIn PDF document text
    • https://kodavagimiwebod.weebly.com/uploads/1/3/5/3/135346487/talisag.pdfIn PDF document text
    • https://dobuxavebixeli.weebly.com/uploads/1/3/4/7/134725246/mitomanav.pdfIn PDF document text
    • https://xiduzejeg.weebly.com/uploads/1/3/1/6/131606953/wusulupoluwi_buluwo.pdfIn PDF document text
    • https://xufiwelak.weebly.com/uploads/1/3/1/1/131164558/3140384.pdfIn PDF document text
    • https://gozewuxibakut.weebly.com/uploads/1/3/0/7/130740596/judaxuweja.pdfIn PDF document text
    • https://jakilirimilibev.weebly.com/uploads/1/3/4/8/134862861/ab4b08971b.pdfIn PDF document text
    • https://mimoleratamofip.weebly.com/uploads/1/3/4/5/134500060/bdc6bd41a918c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://najijojovigom.myartsonline.com/wijitewo.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/porazuwudebilubotusozo.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_off00010e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E55 5228 bytes
SHA-256: df84e2fa21dffff82fab9913e37970497a2a64476a74dcca0dea44efd7e00390
font_01_sfnt_off00012041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12041 11124 bytes
SHA-256: 5ad529338d8a3d148e587ebc004e5f167046247a2931db8388aaf1dce4dd331d