Malicious PDF — malware analysis report

Static analysis result for SHA-256 00fd2028b8fccfbb…

MALICIOUS

PDF

70.9 KB Created: 2021-01-29 02:59:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c33128d2fc08c4335c3f60880cf1d7d3 SHA-1: 3e10de886bf8c59dcc16c49b03c6976cae52dee7 SHA-256: 00fd2028b8fccfbbbf95e94590cb9c60241d09c08d1ef6fc30e3c4821be6a184
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with at least one identified as a malicious redirector. The document body, though heavily corrupted, contains text suggesting a lure related to application crashes. The presence of many SEO-optimized PDF links indicates a likely attempt to distribute malicious content or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/wb?keyword=that In PDF document text
    • https://cdn.sqhk.co/ninoporaleva/jeibHjh/movistar_play_chile_app.pdfIn PDF document text
    • http://akmurzina.com/performance_management_definitionc8plf.pdfIn PDF document text
    • https://jisixeda.weebly.com/uploads/1/3/1/4/131409884/7833326.pdfIn PDF document text
    • https://jeboxalu.weebly.com/uploads/1/3/0/9/130969965/jozezo-mobol-korima-fibotoziwuzuboz.pdfIn PDF document text
    • http://dixuvexawob.22web.org/blackshot_revolution_game.pdfIn PDF document text
    • http://agencymedia-ig.com/vidimufett0lz.pdfIn PDF document text
    • http://hisgohar.site/dead_zombie_shooting_target_zombie_games_3d_apk6xnmh.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/YhVpjjJ/sumagusuxovogewukuziruw.pdfIn PDF document text
    • https://gatiwisukebemo.weebly.com/uploads/1/3/1/4/131438587/xazajodus.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/ZUigkSv/gba_emulator_free_android.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/sgevHic/race_master_manager_apk_download.pdfIn PDF document text
    • https://dovidememalow.weebly.com/uploads/1/3/4/6/134601329/3377262.pdfIn PDF document text
    • http://romeoplanet.club/73224659965jegqe.pdfIn PDF document text
    • https://cdn.sqhk.co/zarudaletok/jaw2Ahg/20664352167.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://siparedobapu.rf.gd/teacher_observation_lesson_plan_template.pdfIn PDF document text
    • http://kefujaforu.rf.gd/languidece_significado_diccionario.pdfIn PDF document text
    • http://mirokuf.rf.gd/jebolutazodemetidopu.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_off0000d8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FC 5312 bytes
SHA-256: 3a7c049f6eff14fdc3c6fcedcc89e1c62e37deb810fe800e61125d1afe263a73
font_01_sfnt_off0000eb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1E 10452 bytes
SHA-256: 8fc9f8164e5b0f0b478a43e8ba3c8107e06e8d89587b6b9127ee6f5bee1cf660

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