Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c258e95b6e6278c…

MALICIOUS

PDF

72.9 KB Created: 2021-02-25 16:11:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 00306a4a1811ef45beb2667c8496f7b5 SHA-1: 06480ac46b537443ea317ab7fe24b89bc4e27854 SHA-256: 7c258e95b6e6278c98353f5973a06a07d3572fc064c37ec68eb8f525cfd9d1c8
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of the malicious URL is a strong indicator of a phishing attempt.

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://seumenha.ru/123?utm_term=time+distance+quotes PDF link annotation
    • https://cdn.sqhk.co/surofowudula/gdxWMr1/6027200916.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/69383990072bn8th.pdfIn PDF document text
    • http://zathkatow.xyz/puluwunudu0fchu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416302/normal_601f8758e9aaa.pdfIn PDF document text
    • http://aydym.club/pojogamevqp9m.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/tkZejiD/pamotefilowu.pdfIn PDF document text
    • http://lokifasumefi.iblogger.org/51942897545.pdfIn PDF document text
    • https://cdn.sqhk.co/xopigotax/0dgf0ha/super_mario_jump_and_run_switch.pdfIn PDF document text
    • https://cdn.sqhk.co/xitilesuxiw/djg4YF8/my_dolphin_show_7_online.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/lizuseguwix/10329366167.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/new_malayalam_movies_moviesda.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/goxekigijasumiramed.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/kulakepizebulurikut.pdfIn PDF document text
    • http://vibufek.epizy.com/hug_day_date_sheet.pdfIn PDF document text
    • http://bokabofomejon.epizy.com/megerozozaxeriluveropux.pdfIn PDF document text
    • http://bokakemipik.epizy.com/70001871693.pdfIn PDF document text
    • http://vogurapake.epizy.com/pamigosutesovemor.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_off0000e21c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21C 5032 bytes
SHA-256: a796630e211f01ebcb2d20346b245f8fb26d38a34049193fdd4dc74501ff2a53
font_01_sfnt_off0000f324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF324 10392 bytes
SHA-256: fcd91ea3e8f9d21c57c541bcd02e3df3a4f2f4af63f30598c71ac0b5de08fae0