Malicious PDF — malware analysis report

Static analysis result for SHA-256 61d79bc5b1abd9c7…

MALICIOUS

PDF

87.2 KB Created: 2021-03-09 05:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 63c1e4a6bf06d46d64c20e7ec65534cd SHA-1: 5cb9f36337cd7eef7edc8c8f289d6c4d5b39efe1 SHA-256: 61d79bc5b1abd9c79d8d068df354c4e4fcd23c9de6cbef6ab3399b29d46e4a41
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URI pointing to a suspicious URL, which is likely part of a phishing or social engineering scheme. The presence of this URL and the nature of the embedded text suggest an attempt to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://maypoin.ru/wix?keyword=does+aldi+do+background+checks PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484612/normal_603792562281c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369930/normal_5fcc22ce7acec.pdfIn PDF document text
    • https://cdn.sqhk.co/gasariba/i8haEsO/28843356033.pdfIn PDF document text
    • http://jukojadijomefar.medianewsonline.com/genie_intellicode_not_working.pdfIn PDF document text
    • http://volosaty100.xyz/42677137063pe5pi.pdfIn PDF document text
    • https://cdn.sqhk.co/zefipuvuwifi/7TYQ4Md/5018649380.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409607/normal_60030eb690d47.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/lYHjjvu/gisezidetanal.pdfIn PDF document text
    • http://winoorama.fun/what_is_a_running_bowline_knot_used_for6jcc6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501356/normal_5ff428b24a407.pdfIn PDF document text
    • http://fibisazorowax.mypressonline.com/vizusejetonaxidiladega.pdfIn PDF document text
    • http://ruguwafe.scienceontheweb.net/jidigivuwarazelozof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467915/normal_5fdbcb170204e.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/e703Vic/jijanejugenoxiv.pdfIn PDF document text
    • https://cdn.sqhk.co/wajinevisu/o0jiepS/woodshop_diaries_youtube.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/futamo/love_story_music_notes_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/certificate_pinning_android_bypass.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/histology_guide_pancreas.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/36013003704.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/jiwijej.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/telecine_play_apk_atualizado.pdfIn PDF document text
    • http://muzulozak.atwebpages.com/cirrhose_du_foie_cours.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/balloon_shooting_games.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_off00011991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11991 5404 bytes
SHA-256: 3c2811c4fb7badd3131dc72d40a5c5ff51b74a2b4ec6eb9c7550b30799f4ba70
font_01_sfnt_off00012bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BEA 10368 bytes
SHA-256: 4a246bb1253b04330af5bac8e01db968a883c812fa0977b80d057bbfa1e72f25

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