Malicious PDF — malware analysis report

Static analysis result for SHA-256 06897af8d52807a7…

MALICIOUS

PDF

89.9 KB Created: 2021-03-19 23:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 61e120cf9881212696730f3fc7e0325e SHA-1: fdff613bd7cd0be6370ee9799c5ffae11b160ba4 SHA-256: 06897af8d52807a748ea399fd164f88de29d114c03e3c74571967f777a685130
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to redirect users to malicious sites, likely as part of a phishing campaign or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://jumiwimov.ru/123?utm_term=online+oxford+advanced+learner%2527+s+dictionary+pdf PDF link annotation
    • http://prizinsta24.space/xegotanozetakekafotuxoline302z.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/vhfwgg3/wafadotarilebozusi.pdfIn PDF document text
    • http://pogadai.xyz/levent_kitaplar_okuayqdk.pdfIn PDF document text
    • https://cdn.sqhk.co/salosegebomi/jdsgcZp/air_traffic_control_specialist_education_requirements.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495262/normal_6018618d5b6ab.pdfIn PDF document text
    • http://getbuiss.online/webinomenekgz7ja.pdfIn PDF document text
    • http://groby-ritual.online/nurafixitulesorudokigakejcpzyq.pdfIn PDF document text
    • http://polikarmonolit.ru/sujuluzapisomilupobigav637c.pdfIn PDF document text
    • http://registrat.space/goruzebikupivapadidusifu3m5q2.pdfIn PDF document text
    • http://hightrade.club/zazurejebatelslfra.pdfIn PDF document text
    • http://iclod.tech/786198017025wh2k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450046/normal_605018d67a1d5.pdfIn PDF document text
    • https://cdn.sqhk.co/nilulugaj/ghjVhsW/nunakobebarigojuvowanuk.pdfIn PDF document text
    • http://ratonawe.iblogger.org/pinegelizatovupatamugo.pdfIn PDF document text
    • http://wawovotem.22web.org/sopiwotupalagomelemeg.pdfIn PDF document text
    • http://goproonly.com/the_empowered_empathk5pmu.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/r3gdkG7/netflix_vr_box_android_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zovigobut/1uXZje4/12129900849.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vumafovixono.rf.gd/lefitirive.pdfIn PDF document text
    • http://jelenexej.rf.gd/67524888432.pdfIn PDF document text
    • http://wejajedotote.epizy.com/52579902859.pdfIn PDF document text
    • http://sozitemow.epizy.com/learning_spanish_worksheets_for_adults.pdfIn PDF document text
    • http://disobaratid.rf.gd/morphological_classification_of_anemia.pdfIn PDF document text
    • http://ruxomipeb.epizy.com/search_by_image_apk4fun.pdfIn PDF document text
    • http://wokasob.rf.gd/wasiu_ayinde_let_the_music_flow.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E6 5440 bytes
SHA-256: 6fa88a76879ba93797545cada3f8850006bd91257919a2ec190332181bfae4cd
font_01_sfnt_off00011c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C8D 10628 bytes
SHA-256: f88602180fd8f4189741c0938de7c53ce67b0603a7bc4b2a4ceddb2320374bb6
font_02_sfnt_off00014113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14113 16544 bytes
SHA-256: 4354bd37e85197a997b2f6c8c8698034d2711068b41d1b66819094364c364bcc