Malicious PDF — malware analysis report

Static analysis result for SHA-256 457314204c6a289b…

MALICIOUS

PDF

99.4 KB Created: 2021-03-07 12:37:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 9a0f26d2711b3d6cef76a55f95806f2e SHA-1: 22e2c102b97ea0996268f90db0c7320da2ffebb8 SHA-256: 457314204c6a289bbb3d6842cd34a96caf056cbf80a5ead466475fbc71a6b363
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains multiple embedded URIs, including one pointing to 'maypoin.ru', which is likely part of a phishing or malware distribution scheme. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the presence of external links and the high detection scores strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=super+mario+rpg+manual PDF link annotation
    • http://jisugun.iblogger.org/xanesasafifoko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368759/normal_6023d223b79e2.pdfIn PDF document text
    • https://mesopivupezuna.weebly.com/uploads/1/3/5/3/135311967/pabane_firumomi_mozaduribijub_pifuvagaxik.pdfIn PDF document text
    • https://dalokagamamis.weebly.com/uploads/1/3/4/6/134695183/nisusasop.pdfIn PDF document text
    • https://luloludelipirad.weebly.com/uploads/1/3/5/3/135318650/kogovukimuva-fomasatisoputol-surexeri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471249/normal_602be7df69d04.pdfIn PDF document text
    • https://bozoxemupep.weebly.com/uploads/1/3/4/3/134317316/pufakivavavol-jotanow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387811/normal_604306d0cca8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447263/normal_6041e10659a74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420775/normal_60397d1867e31.pdfIn PDF document text
    • https://zibataluguxomi.weebly.com/uploads/1/3/1/3/131382491/108764cdd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464522/normal_5fcf9f160ca0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372740/normal_601d6d602153e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe53d5ef-0652-4dfb-a6f8-b3eb641b3fbb/excel_2013_download_32_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc0c8bba-67d0-4291-87c1-167b0311086e/python_download_csv_from_url_password.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84de0514-e19b-4764-9fc8-effc78a54d88/xamiluvozujamomelojiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07c1a999-a93f-4986-91eb-58f3f6aa62e2/lebotunopobonezurileb.pdfIn PDF document text
    • http://nefigubisi.epizy.com/logo_quiz_answers_level_2_by_bubble.pdfIn PDF document text
    • http://duxumuludeza.rf.gd/biotite_crystal_form.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_off00014c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C37 5064 bytes
SHA-256: fae49bf276bc0e40605fa63e325e2c7bbef278f0e3edbf4d8eae4790771985cc
font_01_sfnt_off00015d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D57 10248 bytes
SHA-256: 7f60e4b16ea3b7363f853512387a7efdd18001052b40f7eb3625850f2a0fdfb6

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