Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a821395456558c…

MALICIOUS

PDF

100.5 KB Created: 2021-04-19 21:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: dd678933b46e89661ea5dfb8e6e9db2a SHA-1: 57f8392bf6cf09d9acb08d5c3e0a663164ea1f5a SHA-256: e0a821395456558c5cff560a3f6d392d5a5a27e26c730b5c05b0ef0acf9eff30
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://resalured.ru/strik?utm_term=flushmate+m-101-526-f3+installation PDF link annotation
    • http://widaget.22web.org/46440912044.pdfIn PDF document text
    • http://tipijijajofupi.sportsontheweb.net/english_sentences_with_tamil_meaning_download.pdfIn PDF document text
    • http://kekijojovif.sportsontheweb.net/hemicrania_paroxstica.pdfIn PDF document text
    • http://narezekopalezi.iblogger.org/tonemakerobup.pdfIn PDF document text
    • http://dipitada.iblogger.org/spreadsheet_2016_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvexudid/Yfgbryt/29699586086.pdfIn PDF document text
    • https://cdn.sqhk.co/waxolulum/XjhdZFO/meteor_shower_august_2020_oregon.pdfIn PDF document text
    • http://kudikadip.getenjoyment.net/vuvuzevidajadelab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wafubarig.epizy.com/byomkesh_bakshi_file_download.pdfIn PDF document text
    • http://kazewedofuvula.rf.gd/vijelamifoxokekadira.pdfIn PDF document text
    • http://wuxofiwuludut.epizy.com/15050542211.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/makesotinojerukugudup.pdfIn PDF document text
    • http://fubavinexazixo.onlinewebshop.net/adjective_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/gewhnliche_platane_blattform.pdfIn PDF document text
    • http://gazolisusebo.epizy.com/kisojonajufuferame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52300a77-dbf0-47f9-90d1-2ff1941a8496/xavifasujugetizilix.pdfIn PDF document text
    • http://jefiferinazubim.atwebpages.com/50744619.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/tiwije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0e4d036-da99-42ce-8945-78960614ca0e/zapomunifewanizolup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4c57614-66bb-44e4-8aaf-9c4ddef85120/how_to_stop_tics_habits.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b77918ca-cf61-4d08-9cd4-b3e71eea017e/what_is_progressive_movement_definition.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14489 5664 bytes
SHA-256: 62d334dbe88b4d30f126e91974ccbb832933ba4381a0bf3a2f882e85fe0a144f
font_01_sfnt_off000157b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157B7 13624 bytes
SHA-256: e0fd918df469248fd5da22b326886b0e6187d1edbf317270bae22b62543d32d3

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