Malicious PDF — malware analysis report

Static analysis result for SHA-256 368052a8f45346e1…

MALICIOUS

PDF

65.6 KB Created: 2021-02-27 11:24:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 888d248486133574cb910be511139604 SHA-1: 2ac39cda2f4b27c2c57c79be3416c9657312c46b SHA-256: 368052a8f45346e1d8f79dc4e298b1182102bbef2d7d5da4bf6050795752ac7b
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are disguised as search results for specific book titles. The primary URL, 'https://maypoin.ru/strik?utm_term=brian+tracy+books+in+urdu+pdf', suggests a phishing or scam attempt leveraging search engine optimization techniques. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://maypoin.ru/strik?utm_term=brian+tracy+books+in+urdu+pdf PDF link annotation
    • https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/witadeba_kodudunadef_gotopugexe.pdfIn PDF document text
    • https://funudenor.weebly.com/uploads/1/3/4/3/134319253/504277.pdfIn PDF document text
    • https://nebomigefut.weebly.com/uploads/1/3/4/3/134359696/7949627.pdfIn PDF document text
    • https://dukalafaziwemum.weebly.com/uploads/1/3/4/7/134772398/wabefigak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://peruzaropaxox.epizy.com/swann_smart_security_system_2k_series_1080p_6_camera.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/xapuwabobelezevalerex.pdfIn PDF document text
    • http://tezixos.epizy.com/gaxinagekogedixo.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/mavavilamojeda.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/rejogaloforumuwa.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/starfinder_books_amazon.pdfIn PDF document text
    • http://lulufakek.epizy.com/fovifafonipodozanevawiw.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/ap_studio_art_2d_portfolio_examples.pdfIn PDF document text
    • http://ruludamena.epizy.com/chicco_liteway_stroller_red_berry.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/scrivener_3_cracked.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_off0000c482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC482 5472 bytes
SHA-256: 93eb2eee9c5a4682cf29e638b14a1b43edee53002d6eab193a2019bb97acb595
font_01_sfnt_off0000d72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72E 10156 bytes
SHA-256: 62c304912ce79901a1c6778a4bd6f0a2966ee141623458773e4656836e5c6985

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