Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d1ac2577514788…

MALICIOUS

PDF

94.1 KB Created: 2021-03-20 14:02:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fdfc567ba8125750b84c7721517bacc9 SHA-1: 91f980759219b381fc296f2caf479b136cd82841 SHA-256: 04d1ac2577514788c5dc6d131b2de990f57cbafcf1deeab79120e06bc4a21564
186 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. 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 0.9998

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://gimoguvi.ru/strik?utm_term=barron%2527s+ap+english+language+and+composition+flashcards PDF link annotation
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/zovaduwamebud_supuwozitelodir_luxabivivex_rowafe.pdfIn PDF document text
    • http://bajesiradevo.getenjoyment.net/pakedapagenek.pdfIn PDF document text
    • http://f13x.xyz/voferitazanixaxenojedato11kt1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488090/normal_604b1aaeca7bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393752/normal_5fda895ebed58.pdfIn PDF document text
    • https://najabokaxosol.weebly.com/uploads/1/3/5/3/135300306/gomuwidofot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381551/normal_5feb9e961f74a.pdfIn PDF document text
    • http://karaulovlife.site/xiririsefumuls36v.pdfIn PDF document text
    • https://jorojiwelipevo.weebly.com/uploads/1/3/5/3/135393556/voped-dogazifuguwegin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479441/normal_60078fa396e83.pdfIn PDF document text
    • https://redojakora.weebly.com/uploads/1/3/2/6/132682723/sudodexotex.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/clash_of_kings_strategy_game_guide.pdfIn PDF document text
    • https://zijobukevas.weebly.com/uploads/1/3/1/4/131454580/7509426.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388416/normal_602345a4a98b7.pdfIn PDF document text
    • http://mx50off.info/minutes_of_meeting_template_word_2013x1te3.pdfIn PDF document text
    • https://fogufufizanalu.weebly.com/uploads/1/3/0/8/130813948/d0384.pdfIn PDF document text
    • https://jadufebifov.weebly.com/uploads/1/3/4/6/134627690/3727289.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/how_to_cancel_your_wall_street_journal_subscription.pdfIn PDF document text
    • http://sojusenetuki.onlinewebshop.net/bukhari_sharif_in_urdu_hadees_full_download.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_off000132a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132A7 5652 bytes
SHA-256: 910ab798074fcc21085070a2c09cd851b8318ac66cdf0c08a0758d1ef5f95d34
font_01_sfnt_off000145c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145C0 10952 bytes
SHA-256: ecac9e11e952b4ddf317dc88de488eac17ac25a7488bb5f8ca6462788d0b6d3a

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