Malicious PDF — malware analysis report

Static analysis result for SHA-256 750ad8d716987e0a…

MALICIOUS

PDF

78.5 KB Created: 2021-02-07 13:54:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 84fe2e29f67c350119e51c63ff2e9ec2 SHA-1: 8a1ae8b5b04a7f32026852d0d151d70715e17f5d SHA-256: 750ad8d716987e0a4f75667dd2b1528585d911f38fed7c2c657ad54e6f179d3c
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest an attempt to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wb?keyword=obj%20file%20format%203d%20model%20free PDF link annotation
    • http://jewlgems.com/vekewewobikigokape99j4k.pdfIn PDF document text
    • http://wiregabjuk.fun/zirozajoxozevajukivobqnsey.pdfIn PDF document text
    • http://pasetbs.xyz/bagojafadumibokasedejuduvuvtso.pdfIn PDF document text
    • http://ig-about.net/60651071506ys4df.pdfIn PDF document text
    • http://bit7.top/assured_shorthold_tenancy_agreement_template_2018p2n3q.pdfIn PDF document text
    • http://kaguveka.22web.org/free_powerpoint_templates_changes.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/difigomisosak/putah_creek_fishing_guide.pdfIn PDF document text
    • http://lufafutogixafu.rf.gd/bupemevadifef.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/32438772344.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/asus_rt-_ac3100_manual.pdfIn PDF document text
    • http://lofalag.epizy.com/guide_to_legislative_process_in_kenya.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/44089647704.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/hierophant_confidant_guide_persona_5.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/29478262816.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/youcam_makeup_selfie_camera_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/check_baseband_version_android.pdfIn PDF document text
    • http://vanakodezifezuv.epizy.com/sleep_apnea_and_anesthesia_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/cursive_alphabet_handwriting_practice_sheets.pdfIn PDF document text
    • http://tosefiwaniw.rf.gd/crash_bandicoot_mind_over_mutant_wii_guide.pdfIn PDF document text
    • http://keporumutiwem.epizy.com/60855596357.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_off0000f498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF498 5280 bytes
SHA-256: 994cb78823896966064f932729bd1a1861de006b7b3ebe02666cf0549240d89a
font_01_sfnt_off00010670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10670 11112 bytes
SHA-256: b3f7e1010a0680718095c52d25d61447e8e4c8905d1aac1ac85ca868a2277e1a

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