Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab0c01599c5822b…

MALICIOUS

PDF

82.7 KB Created: 2021-02-25 19:33:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 4a10c1a1ff7948156412d83c242750c0 SHA-1: 33db35ea9dbfc34443052bde4107accf51107b00 SHA-256: eab0c01599c5822b361b67bc2bd4b02e9acdd10187656f4ad0f5e9cf55201536
186 Risk Score

Malware Insights

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

This PDF file is classified as malicious and contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded URLs and the heuristic firings indicate that the document is designed to redirect users to potentially malicious websites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and URL patterns are strongly indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/award?keyword=how+to+add+songs+to+eclipse+mp3+player PDF link annotation
    • https://cdn.sqhk.co/posuwumujome/zgghgw6/rikuwobapasovoj.pdfIn PDF document text
    • https://fazolusafiwef.weebly.com/uploads/1/3/4/5/134585025/bipusugipegedagew.pdfIn PDF document text
    • https://cdn.sqhk.co/ketixudolu/6Xxpigm/alchemy_game_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/wofetewa/hjx5Lih/diaper_genie_cheap.pdfIn PDF document text
    • https://feloxoxux.weebly.com/uploads/1/3/4/0/134000485/39124.pdfIn PDF document text
    • https://wiwetone.weebly.com/uploads/1/3/4/6/134660192/nirerikexikupojixow.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/d7hovhh/17591527493.pdfIn PDF document text
    • http://helpcopyright-service.com/49462290002jtlay.pdfIn PDF document text
    • http://3gusevshop.space/83243420589g9oj.pdfIn PDF document text
    • https://zezupivipikoko.weebly.com/uploads/1/3/4/5/134596705/vofepebi.pdfIn PDF document text
    • https://tunuwowidu.weebly.com/uploads/1/3/4/6/134606858/polup.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/hihihjh/16335615155.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/jihjgiS/green_bay_packers_game_today_live_stream.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/gcrGidv/28954088428.pdfIn PDF document text
    • http://daddytestit.xyz/gakezixesesaropuvolowrxjf.pdfIn PDF document text
    • https://vawilateg.weebly.com/uploads/1/3/4/6/134697686/tizavuxox.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/hatcidF/pasakujovupudasavubu.pdfIn PDF document text
    • https://worojipe.weebly.com/uploads/1/3/1/3/131382243/divibuzukoxunifimil.pdfIn PDF document text
    • https://novomuzedideb.weebly.com/uploads/1/3/1/4/131406537/sezowajogukapow-puwunajizes-gojepesixode-gedalobix.pdfIn PDF document text
    • http://goromeo.club/77615904313gup7s.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jadere/zakuxobuk.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/52966414641.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF853 5500 bytes
SHA-256: c3bbd657ac9dcf09b59edf83c163ab131c72d1ede2a28f2211d4c692f404c26b
font_01_sfnt_off00010b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B04 10476 bytes
SHA-256: 44f33ba8dfc57e4a30d124c2bdc470eecbb6b0ff9df080fa7cd46e8ab34b7792
font_02_sfnt_off00012e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E8C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c