Malicious PDF — malware analysis report

Static analysis result for SHA-256 64f180e7730a3314…

MALICIOUS

PDF

77.7 KB Created: 2021-09-16 18:19:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1d8655a34a184d7245daa212a59d3c5e SHA-1: a0ddecb140fd3508301d267fb3b1f8f2fb49aa43 SHA-256: 64f180e7730a3314f159ee0c9c96585ec2719db7817948273eeb5c2f7e848625
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and is flagged by ClamAV as a phishing trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of distinct, low-reputation links, suggesting an attempt to distribute malicious content or phish users. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://mauspro.net/upload/files/20426618329.pdf In PDF document text
    • https://conviviodihera.it/dati/upload/file/46807766558.pdfIn PDF document text
    • http://epicridesnepal.com/files/25782008393.pdfIn PDF document text
    • http://harchovyk.com/userfiles/file/85782930301.pdfIn PDF document text
    • http://agavietnam.com/img/files/kemezisosexafavuk.pdfIn PDF document text
    • http://dae-young.kr/upload/fckeditor/file/nipazuwigos.pdfIn PDF document text
    • https://stpeterscbs.ca/ckfinder/userfiles/files/7052298057.pdfIn PDF document text
    • http://smelawservice.com/file_media/file_image/file/wonidutesedojokufize.pdfIn PDF document text
    • http://mptech.vn/ckfinder/userfiles/files/folupokaxamovi.pdfIn PDF document text
    • http://mazdooradda.com/userfiles/file/66139437257.pdfIn PDF document text
    • http://mdknoodles.co/uploads/files/21402546199.pdfIn PDF document text
    • http://itcck.org/upload/editor/file/bexasakiviwagunuzeta.pdfIn PDF document text
    • http://net-marketing.hu/images/files/82133577535.pdfIn PDF document text
    • https://samavetpharm.com/userfiles/files/255717313.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/9edf2ee0d84240594fd8525a385877e0/pugiz.pdfIn PDF document text
    • https://bor-diing.com/upload/files/wejefisuxo.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16131f2b126c36---zazodujitufuwokofovop.pdfIn PDF document text
    • http://imbirimbir.ru/files/97486798884.pdfIn PDF document text
    • http://michardardillier.com/ckfinder/userfiles/files/rafobenajatutinonibi.pdfIn PDF document text
    • https://artistprasanna.com/userfiles/file/rawadeda.pdfIn PDF document text
    • http://demenagements-remond.fr/userfiles/file/20210913063355.pdfIn PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/papebekola.pdfIn PDF document text
    • https://metrosecuritynepal.com/assets/userfiles/files/zalurit.pdfIn PDF document text
    • http://0-50.ru/userfiles/file/20485646091.pdfIn PDF document text
    • https://turbooto.vn/upload/files/15381429090.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=how+do+you+scan+a+qr+code+on+iphone+6sPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c97f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97F 17616 bytes
SHA-256: 3ceee7026812df330b4e309e0ee2ddb980735493d313dfaddd6026fa895ce05d
font_01_sfnt_off0000f74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF74F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F66 11072 bytes
SHA-256: e1746ed2618059434b3b3e95c8a90ba9ea4e1610e0b597fcfeca6e4d6e9d5aea

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