Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b34fe16e213d63…

MALICIOUS

PDF

78.3 KB Created: 2021-03-06 04:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 89600a2faffd0da7fd3b34065a5277f1 SHA-1: 1052fbbdb7905f9d6dc209f06845b12002d2df8c SHA-256: b2b34fe16e213d630b430d28a9d986baef2668d983ef31daa9b33599d8379e25
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 multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. The document contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The presence of numerous external URIs and the classification as a link farm suggest a phishing or scamming operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://mezovuduw.ru/strik?utm_term=how+do+i+reset+my+maytag+maxima+washer PDF link annotation
    • http://megalit-korolev.ru/1st_grade_math_frog_yoga_practice_workbookwv9lj.pdfIn PDF document text
    • https://cdn.sqhk.co/danexili/lqvKjcn/free_online_games_for_girls-_nick_jr.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/i5mgfge/download_signal_private_messenger_uptodown.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405674/normal_5fdae78bb1fa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468267/normal_6025a82483480.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474978/normal_6039a7a026fbe.pdfIn PDF document text
    • http://krokoboko6.xyz/preschool_mom_worksheetsba17s.pdfIn PDF document text
    • http://myfoxing.online/finite_and_infinite_sets_worksheet52orf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7ffe38df-ef78-47a1-8632-a9c579db478a.filesusr.com/ugd/8ff694_87cb6071f62b491fbe8f5974d287b16d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/86719565-b28a-4e85-b0f0-371dc49abb4c/red_letter_bible_free_download.pdfIn PDF document text
    • http://deworapuf.epizy.com/is_sketchup_pro_free_for_students.pdfIn PDF document text
    • https://73e25548-3913-4bbb-aa69-a1b25f69568d.filesusr.com/ugd/cece23_75515fd0a4b04cef8936b8636bd5109c.pdf?index=trueIn PDF document text
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_ccda281624e64cd28dbb83c51468bcf3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/45205341-8eb0-4c1d-a0c8-6f06be59efae/ap_stats_2016_frq_6.pdfIn PDF document text
    • http://lezujepadu.rf.gd/figurative_language_worksheet_answer_key.pdfIn PDF document text
    • http://kogejikez.epizy.com/52953804948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b351677-a9ad-455c-8b24-fad9367384f3/how_to_fix_rust_on_jeep_liberty.pdfIn PDF document text
    • http://ximogubofew.epizy.com/fuwoxujaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89020de6-d115-4479-b6c2-7bdfc3ada0a9/saferafipizewewax.pdfIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_e53c4645077742659cc21f49e7436590.pdf?index=trueIn PDF document text
    • http://xupanapil.epizy.com/52231245295.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_off0000f55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55D 5432 bytes
SHA-256: e14a31ca146413402c571151465ed163bfa71de72d8257b534a65e4a0b506310
font_01_sfnt_off000107bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107BD 10544 bytes
SHA-256: 8d57c6d8c1988f91d1078f0cc6d36703fed87ac8ed569fe5678f47f5531ae0c2

Open this report in the interactive analyzer, or submit your own file for analysis.