Malicious PDF — malware analysis report

Static analysis result for SHA-256 82fd9d8fa1be0938…

MALICIOUS

PDF

70.7 KB Created: 2021-05-16 04:44:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 28d2ab94e26304a2ba508d27db8d272a SHA-1: dfb0494c7a24a1c986923a055b21a3186690e2a1 SHA-256: 82fd9d8fa1be093861414174342580c1a1b5f6d3c4a1876a29764de15daa5c11
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/strik?utm_term=jane%2527s+fighting+ships+1914+pdf PDF link annotation
    • http://sifuzifixezija.medianewsonline.com/96926826234.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://hhizmet.com/ejercicios_de_lectoescritura_para_primer_grado_de_primaria_para_imprimirg1te7.pdfIn PDF document text
    • http://naturaitalia.space/25371501343toaz0.pdfIn PDF document text
    • http://gbo.guru/7568823536569i82.pdfIn PDF document text
    • http://shop50off.info/totawazijogovoguv0hy2.pdfIn PDF document text
    • http://tabelib.iblogger.org/pofedufigonobifuluniwi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/37a1115d-fadd-4d94-b70a-a3b2829f9615/financial_statement_analysis_icai.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/beauty_and_the_beast_movie_bluray.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f03b23d-74e9-46d3-b495-718ef3030e6b/puwoxapurofabebemowoxude.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/dijubipeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9a60ab2-9b4d-47c7-8197-cac69dc54374/jefepisaxapaxusew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31507045-461e-4b8c-aad0-99b0e70f5486/readiness_for_enhanced_family_processes_care_plan.pdfIn PDF document text
    • http://muduwabu.rf.gd/google_analytics_certification_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/totosivotexifovos.pdfIn PDF document text
    • http://zorijefugixor.atwebpages.com/princess_diaries_2_cast_members.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a55909b-a90e-4506-b78f-087423db7610/miss_peregrine_home_for_peculiar_full_movie_hindi_dubbed_download_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/jack_sparrow_song_piano_sheet_music.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/biscuits_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d351a0d3-bc2f-4456-b89e-7a16a388e2d8/52117990951.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CB 5492 bytes
SHA-256: a65e14a62b6e6c8f0847f98bda1be0692d933142e4b9d95e65447f984b4d84be
font_01_sfnt_off0000e78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78E 10700 bytes
SHA-256: 20297aa87423b9ce940e2638cac6880c3a26138a55803440e77d13373ed84365

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