Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd2ee16e3aa63988…

MALICIOUS

PDF

72.2 KB Created: 2021-03-13 19:50:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d520a6562054759df3782a76cd79a25c SHA-1: 92abfc36dd1f2a960b12e42888cb060cdf35a92b SHA-256: dd2ee16e3aa63988b963d2802ab1c3bc82315f98b331b91a45e3a4dda4befefe
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9993

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://baarspo.ru/wix?keyword=sierra+middle+school+stockton+ca PDF link annotation
    • http://rekijiwowak.scienceontheweb.net/tozisevipikufemumumefixi.pdfIn PDF document text
    • https://pasifoberili.weebly.com/uploads/1/3/4/8/134881239/nokapedimogev_memujeju_lapedijetu.pdfIn PDF document text
    • https://lodarexuxune.weebly.com/uploads/1/3/4/3/134352809/nimonukow_gawunulenufakaj.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/zhjdI8x/34229864002.pdfIn PDF document text
    • http://temopiju.iblogger.org/lelodenofadeke.pdfIn PDF document text
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/01850.pdfIn PDF document text
    • https://cdn.sqhk.co/wudawagirus/hhfyhiR/john_gba_emulator_apk.pdfIn PDF document text
    • http://gadatoreneperil.mygamesonline.org/23666495248.pdfIn PDF document text
    • http://kopavavabigi.66ghz.com/frostgrave_wizard_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/dodanadofu/rGbhbhh/85743568269.pdfIn PDF document text
    • https://cdn.sqhk.co/tisumusef/dew8gdG/sepob.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/hihaUHh/flash_video_downloader_plus_chrome.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ff4d9611-e7ea-45f2-85d3-f0b464ef817f.filesusr.com/ugd/48f461_60de3b1864f3455f9cdc273967041e54.pdf?index=trueIn PDF document text
    • http://puvodiga.rf.gd/ruderebotinojexo.pdfIn PDF document text
    • https://d0bf7e8b-5449-41c0-93e9-161603c0719f.filesusr.com/ugd/197ed4_5ad40fb40de24e09afad30f2364b0353.pdf?index=trueIn PDF document text
    • http://wifudozakiteg.epizy.com/xuziviw.pdfIn PDF document text
    • http://gawasaxe.epizy.com/casio_991_es_plus_emulator_free.pdfIn PDF document text
    • http://pezaruzij.rf.gd/psychology_vocabulary_in_use_chomikuj.pdfIn PDF document text
    • http://josewovegufi.rf.gd/dezolodofo.pdfIn PDF document text
    • http://pepagulax.epizy.com/74615228632.pdfIn PDF document text
    • https://c6111751-42b6-464f-a8b1-832d492ff999.filesusr.com/ugd/3d0627_3d07a1a9717c427d8144ef2b3437db87.pdf?index=trueIn PDF document text
    • http://jufofokisib.epizy.com/49389690114.pdfIn PDF document text
    • http://sidiwen.epizy.com/pokemon_let_s_go_starter_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_off0000d9ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BA 5344 bytes
SHA-256: 89e7b3327d17faa2169077372551779f9cb31790c71f0787f0e49c3b935f1329
font_01_sfnt_off0000ebb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB8 11548 bytes
SHA-256: 3d1fea557415500de127da5b808fc6dd7d9907f33f3a33936e8125dbb3e6ecd0

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