Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b717954d4d1282f…

MALICIOUS

PDF

80.4 KB Created: 2021-03-22 13:49:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: dbd407092f504cfc20a4997a970fc8b6 SHA-1: d6e69872bad4cc795d0dccbb2181f1ca13825b16 SHA-256: 2b717954d4d1282f7d9280af338ffd3e6282923a978b92dfa24f1c97d6416df1
186 Risk Score

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=davinci+resolve+15+reference+manual+pdf PDF link annotation
    • https://vasalidut.weebly.com/uploads/1/3/0/9/130969475/716ff.pdfIn PDF document text
    • http://devuweza.scienceontheweb.net/lovej.pdfIn PDF document text
    • https://dapodufez.weebly.com/uploads/1/3/3/9/133997146/kimigiwabiz_nujovof_javiroxele_bamapamejere.pdfIn PDF document text
    • http://kaboliwup.mypressonline.com/2016_mazda_cx_5_review_uk.pdfIn PDF document text
    • http://kilekapalovuzo.getenjoyment.net/black_gram_cultivation_in_tamil_nadu.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/add_text_to_existing_using_python.pdfIn PDF document text
    • https://pidesetax.weebly.com/uploads/1/3/0/7/130739971/naferid.pdfIn PDF document text
    • https://forilulan.weebly.com/uploads/1/3/1/4/131408022/5053506.pdfIn PDF document text
    • https://kejarokelevu.weebly.com/uploads/1/3/5/2/135297316/lifujuzuli.pdfIn PDF document text
    • https://forijadezututeg.weebly.com/uploads/1/3/0/8/130813765/df2dd5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jakezijaredu.epizy.com/dirazut.pdfIn PDF document text
    • http://furofazitogo.epizy.com/vshare_market_for_ipad.pdfIn PDF document text
    • http://dosekidonara.epizy.com/73704070006.pdfIn PDF document text
    • http://vabedit.epizy.com/2020_australian_calendar_template_word.pdfIn PDF document text
    • http://bedopevidorofi.myartsonline.com/38884839886.pdfIn PDF document text
    • https://2a4b29e6-a790-453e-81e7-e8b9caf2c27b.filesusr.com/ugd/bf0735_a71ef53361d949d58ae489054f64a4cc.pdf?index=trueIn PDF document text
    • http://pedamodaw.onlinewebshop.net/gazebo_tutorial.pdfIn PDF document text
    • https://8eb0ff2f-1b5f-41fb-a82b-bf279dc7f43e.filesusr.com/ugd/868f76_ac5521f8b57e49dba155288647bf12ab.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2A 5340 bytes
SHA-256: 41cfb855f9e65bf95ab8674129c9eb1a7f9d5f57eb7182a8509e521084ce8e52
font_01_sfnt_off0000ff36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF36 12320 bytes
SHA-256: 01abf8ddffde8aade6ad0bd5ff917b206ad31f0e5e468770e4af3944b9d44a2a
font_02_sfnt_off00012651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12651 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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