Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fef18408c9ab025…

MALICIOUS

PDF

215.2 KB Created: 2021-03-20 08:22:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: b7c4fb6f6dd13dbf27602551f62b13ec SHA-1: 9f5b84e958cb58919693a902b171e1c33be79f95 SHA-256: 9fef18408c9ab0251e0b71be10689216ec22c7038fc826e237a4ff754b0c0853
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing content. The document body, though heavily obfuscated, contains keywords that may be used as a lure. No scripts were extracted, but the presence of external URLs suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=iarno+albrek+spells PDF link annotation
    • http://bbflowers.net/kamimexusekuxipevijukejukanj3n.pdfIn PDF document text
    • http://macsk.space/i-864_affidavit_of_supportxmjas.pdfIn PDF document text
    • https://cdn.sqhk.co/dujagazatad/kigibhj/73902289694.pdfIn PDF document text
    • http://aduo5.online/8649730535uxkdq.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/gcdgdjf/venanebuvepubepisux.pdfIn PDF document text
    • http://gogogoinst.xyz/72108194611zyywd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409394/normal_5fc86c177df25.pdfIn PDF document text
    • http://accueilcmb.com/cut_and_paint_free_download_androidoljrm.pdfIn PDF document text
    • http://hookup757.fun/7099911986pyqqy.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwesedujila/i1jgnRA/notification_tones_for_whatsapp_mp3.pdfIn PDF document text
    • http://enots.space/459282881160wgfp.pdfIn PDF document text
    • http://pihodze.com/fl_studio_12_producer_edition_free_reddit44dy3.pdfIn PDF document text
    • https://topalezomezo.weebly.com/uploads/1/3/4/3/134305389/5943264.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407986/normal_5fe900397cea9.pdfIn PDF document text
    • https://cdn.sqhk.co/kerutadit/idrhiDd/daxaxuwiveg.pdfIn PDF document text
    • http://topsale.pro/how_much_does_it_cost_to_have_a_stall_at_bath_christmas_marketbl4hi.pdfIn PDF document text
    • http://sreda.city/gmat_prep_course_online8j6ou.pdfIn PDF document text
    • https://sitawixabebel.weebly.com/uploads/1/3/4/3/134319036/nivesitefuti-kutemo-vagojaroxuzif.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://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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000309ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309AD 4612 bytes
SHA-256: 567076c992d243efb5c51d15a67b588d9637f0d9d1255bf54783d63b2b21c205
font_01_sfnt_off00031948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31948 11532 bytes
SHA-256: 2afd2902787c59aa08cdb8643eba5f5183140772a55f6153386bdf3a63672ee5
font_02_sfnt_off0003405b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3405B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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