Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fbe5c6555237dc4…

MALICIOUS

PDF

84.8 KB Created: 2021-02-02 18:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 3ffcbd117dd6e000d9d963245c1445ad SHA-1: 205d753daaef3e4377630410fe0566fba1c90798 SHA-256: 8fbe5c6555237dc4b8b88c8968317332d9a7822503dabf1173404f2d3a2ba5e7
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple embedded URLs and is flagged by heuristics as a payment redirection lure, suggesting it aims to trick users into visiting malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of numerous links and the lure pattern point towards an attempt to exploit user trust for financial gain or system compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://baarspo.ru/aws?utm_term=freedom+debt+relief+bbb+report PDF link annotation
    • http://ketokod.iblogger.org/microbiology_sterilization_techniques.pdfIn PDF document text
    • https://sopivumebisul.weebly.com/uploads/1/3/1/4/131413603/63d0bb04c.pdfIn PDF document text
    • http://jewlgems.com/start_in_antreprenoriatzynot.pdfIn PDF document text
    • https://vaxujorukub.weebly.com/uploads/1/3/1/0/131070318/6941758.pdfIn PDF document text
    • http://grinallex.shop/el_nombre_del_vientorzpf2.pdfIn PDF document text
    • http://givepamodugag.22web.org/google_play_services_lollipop_apkpure.pdfIn PDF document text
    • https://wujadagepixiv.weebly.com/uploads/1/3/1/8/131856877/bunoj-vevulifagit-jekini.pdfIn PDF document text
    • http://tomandbxof.site/table_runner_free_shippinge6b8n.pdfIn PDF document text
    • https://cdn.sqhk.co/varomapit/dgcia2Q/amazon_griswold_family_christmas_village.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/GjhgiLZ/76947301066.pdfIn PDF document text
    • https://cdn.sqhk.co/litonesi/hgibidT/xewenumoden.pdfIn PDF document text
    • https://lulofaki.weebly.com/uploads/1/3/1/4/131453598/8050294.pdfIn PDF document text
    • http://liketime.online/xetam4evzz.pdfIn PDF document text
    • https://batozovij.weebly.com/uploads/1/3/1/4/131455337/dakebopik.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/TgeVaJA/9234975342.pdfIn PDF document text
    • http://pannochki-art.com/link_apple_health_to_myfitnesspalstked.pdfIn PDF document text
    • https://cdn.sqhk.co/janonaset/ibaUhdm/15479125696.pdfIn PDF document text
    • https://cdn.sqhk.co/jututumogu/jjFhcB9/meferidorekipabezevese.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/jizubisetebof/adobe_xd_templates_dashboard.pdfIn PDF document text
    • http://tikolikenugim.epizy.com/detifimixevupajisoxano.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/17154915765.pdfIn PDF document text
    • http://poresiz.epizy.com/boboiboy_movie_2_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/nekirego.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_off000110f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110F1 4892 bytes
SHA-256: 7956be7b85c9ef3e4eecf663e91c358d355de30a75546f1995390a487bd52b67
font_01_sfnt_off00012179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12179 10604 bytes
SHA-256: 06b7153e1e7e465d8f7631bb404b61fdf4870691932e4907ac9180761e5298ac

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