Malicious PDF — malware analysis report

Static analysis result for SHA-256 102caf259d428495…

MALICIOUS

PDF

73.5 KB Created: 2021-02-16 22:25:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a8f400d0f43aec11eb141556e11edc60 SHA-1: b876d454093daee40316c09c97e8fc26dad9837a SHA-256: 102caf259d428495317f4262f030a65cbadd637d568682dd5cdd69005e8209f8
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting it's designed to redirect users to potentially harmful websites. The ClamAV detection further confirms its malicious nature, classifying it as Pdf.Phishing.Trojan. No scripts were extracted, but the presence of numerous URLs points towards a phishing or malicious redirection attack.

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 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.
  • 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://druttle.ru/123?utm_term=les+trois+mousquetaires+beer PDF link annotation
    • http://yazansoft.com/7516590789kjvbb.pdfIn PDF document text
    • https://rejukikigukaw.weebly.com/uploads/1/3/5/3/135387704/laxuluxikesis-bukib.pdfIn PDF document text
    • http://nimened.66ghz.com/best_android_os_version_for_tablet.pdfIn PDF document text
    • https://sisuwupuwadigif.weebly.com/uploads/1/3/1/4/131437471/7141554.pdfIn PDF document text
    • https://tegidaweriwasul.weebly.com/uploads/1/3/1/4/131483440/siwadixik_lurogumujaw_rubisuwa_menemi.pdfIn PDF document text
    • http://kyrgyztours.com/ischemia_necrosis_informationw6pdd.pdfIn PDF document text
    • http://peludofnor.fun/imca_guidelines_for_dp_trialsdqm7a.pdfIn PDF document text
    • https://silatasetexa.weebly.com/uploads/1/3/1/6/131637876/remedokomexolod_warosukakesu_temetoxasi_sazasuvi.pdfIn PDF document text
    • https://ganizosu.weebly.com/uploads/1/3/4/4/134434359/papuj_marefidoruf_bisigo_foxuzogema.pdfIn PDF document text
    • https://zilisekisami.weebly.com/uploads/1/3/1/4/131437354/kudokiwe_banolu_joxatafovu.pdfIn PDF document text
    • https://cdn.sqhk.co/murofoli/4TRlk6M/pokemon_sword_and_shield_dlc_legendaries_locations.pdfIn PDF document text
    • https://banafazag.weebly.com/uploads/1/3/4/3/134325205/3299025.pdfIn PDF document text
    • http://tradebot.space/musaledebenazenadopofqtb0.pdfIn PDF document text
    • https://jabizujosewej.weebly.com/uploads/1/3/4/5/134584717/xanizodusolafak.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/tometubufimopim/kikuyu_bible_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/zamarumusatiwiterup.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/buzz_video_1080p.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/chikati_gadilo_chithakotudu_movie_480p.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/game_alien_shooter_1_full_crack.pdfIn PDF document text
    • http://roxeruteruda.epizy.com/rujanakemobenetetinuf.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_off0000e0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F5 5008 bytes
SHA-256: 22abaaaaf3c9d841c3375b5765a098044a23b3bb65ee5961be943e4b422c462f
font_01_sfnt_off0000f1e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E3 11876 bytes
SHA-256: 38490b02d2415d1e2a6a3562efde8c7f05161c731345cfd549a0ce4e2ace73c9

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