Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4ea21da8140c60…

MALICIOUS

PDF

77.0 KB Created: 2021-01-19 22:48:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fd239aa9f3e7c6cfcfc5073cbb87eb35 SHA-1: d5a0c24b60bc413f6c544d01b7a4d357f190343b SHA-256: 7e4ea21da8140c60305de49bcd933259bb4691e1323eb3a3926918720bd9e108
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wb?keyword=occupational%20therapy%20jobs%20san%20diego PDF link annotation
    • https://cdn.sqhk.co/kefexunas/Hfoge52/business_plan_for_startup_company_example.pdfIn PDF document text
    • https://jegofedakosufe.weebly.com/uploads/1/3/5/3/135320490/d9ae399b.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/fig4uom/gtr_traffic_rivals.pdfIn PDF document text
    • https://site-1176492.mozfiles.com/files/1176492/53013737061.pdfIn PDF document text
    • https://site-1175951.mozfiles.com/files/1175951/factoring_trinomials_worksheet_algebra_2.pdfIn PDF document text
    • https://site-1173403.mozfiles.com/files/1173403/pocket_drum_2_review.pdfIn PDF document text
    • https://davijune.weebly.com/uploads/1/3/5/3/135315517/nozobub.pdfIn PDF document text
    • https://rujafamuzesoka.weebly.com/uploads/1/3/5/3/135339602/raladajujovina.pdfIn PDF document text
    • https://site-1179801.mozfiles.com/files/1179801/82277024254.pdfIn PDF document text
    • https://site-1179507.mozfiles.com/files/1179507/lexewipijigusaluj.pdfIn PDF document text
    • https://cdn.sqhk.co/xetilibul/CJhjgZD/resifevajuvifiretabi.pdfIn PDF document text
    • https://papuwupiruji.weebly.com/uploads/1/3/4/3/134348025/98a072b8503.pdfIn PDF document text
    • https://jiliwadikejupa.weebly.com/uploads/1/3/1/3/131379685/guvod_ninozezuja_futavox_fegemeronenubav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xemubekimivimed.epizy.com/ledepawas.pdfIn PDF document text
    • http://fibonudonug.epizy.com/animal_crossing_wii_hair_guide.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_off0000ef17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF17 5680 bytes
SHA-256: 158fe559f47fdd48eaac67ecad4bf6b076b5b48185f2ff4e7c0661a460674d3b
font_01_sfnt_off00010263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10263 10756 bytes
SHA-256: 9d530dadebbfd9a7c1be8655eee901359ebda07afed819477548c284d243adac