Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b77951a4294d0c…

MALICIOUS

PDF

81.6 KB Created: 2021-01-31 21:14:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 57cd01d902a5418c6e49111cd33ef337 SHA-1: 54bb996bd409c9ce7cca34c468bb3b3c445e05e4 SHA-256: b6b77951a4294d0c1a5d30d0c17399aa61e681492c13d97e130a22f742657044
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The PDF_URI heuristic confirms the presence of an external URI, which is the primary indicator of the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/aws?utm_term=a+current+affair+reporter+arrested PDF link annotation
    • https://cdn.sqhk.co/fubafonu/h5Vhjhj/movistar_mexico_telefono_01800.pdfIn PDF document text
    • https://cdn.sqhk.co/mekoposa/c2Fidgj/carrying_boxes_while_pregnant.pdfIn PDF document text
    • http://lakurix.22web.org/good_acknowledgement_for_report.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/abjdifC/fedufizagedavure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409421/normal_6009a87f03f29.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
    • http://jufawananifufa.rf.gd/nirimafawigogavukorulap.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/formal_dance_at_high_school.pdfIn PDF document text
    • http://zetijub.epizy.com/bb_racing_mod_apk_rexdl.pdfIn PDF document text
    • http://posugez.epizy.com/kijuniwoxiw.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/zatodotosenapozeril.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/kureloxobux.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/battlefield_games_free.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/7435148278.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/90481194300.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/gojarux.pdfIn PDF document text
    • http://zedorufusoli.rf.gd/guia_de_aditivos_alimentarios.pdfIn PDF document text
    • http://zijomofi.epizy.com/73960281547.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/gigevij.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f33d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33D 4988 bytes
SHA-256: c43c5ed01084f4cfe9b52825a4b04569eb4e90e169add271e1b01531f109708f
font_01_sfnt_off00010437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10437 11248 bytes
SHA-256: 7dbd5ba7025fc042ef542f5723bd8fbaca0ad9f41612a98d1d4597370fcbcccf
font_02_sfnt_off00012a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A87 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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