Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e5c12507fac860…

MALICIOUS

PDF

69.0 KB Created: 2021-10-01 10:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 5913b16def786398172f842c532bba30 SHA-1: d9371d7f663d4dc95406ad684c610c139669ee0a SHA-256: 58e5c12507fac8609921f67e180ef452ee092a3f81ed2de13ea2ac68bf6b3493
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document's primary purpose is to redirect users to a network of potentially malicious or scam-related websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious intent to redirect users to external, untrusted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://bunyaminerdemir.com/resimler/files/vimuwetugabarimerijuda.pdf In PDF document text
    • http://bagiez.de/userfiles/file/74386884944.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138d48726912---76425987774.pdfIn PDF document text
    • http://cbcom.fr/ressource/site-image/files/67140849866.pdfIn PDF document text
    • https://leuphuotcamap.com/uploads/image/files/kewoxawalurozofagodomu.pdfIn PDF document text
    • http://gps-tw.com/CKEdit/upload/files/mabadufasinoxesofe.pdfIn PDF document text
    • http://dekobonner.de/userfiles/file/fisurepanexa.pdfIn PDF document text
    • https://kaskad-74.ru/images/uploads/46108162257.pdfIn PDF document text
    • http://bobiniauto.com/userfiles/file/xepodaz.pdfIn PDF document text
    • https://haltia.mx/sii/ckfinder/userfiles/files/ruxopesekabejizur.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614b34d923f85---pilelude.pdfIn PDF document text
    • https://valerart.com/ckfinder/userfiles/files/kixabu.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1614f31345ab2c---xusevosijebuxabowibus.pdfIn PDF document text
    • http://abwfinlay.com/uploads/files/43955045031.pdfIn PDF document text
    • https://unifor975.ca/userfiles/file/tofubazepil.pdfIn PDF document text
    • http://houtackers.nl/userfiles/file/45568152675.pdfIn PDF document text
    • https://cengilli.com/icerik_images/file/begesipagawaroloviw.pdfIn PDF document text
    • https://ruxthai-guesthouse-chiangmai.com/ckfinder/userfiles/files/23958945786.pdfIn PDF document text
    • https://sanaspinler.net/calisma2/files/uploads/44293885978.pdfIn PDF document text
    • https://dongcohonda.com/userfiles/file/lelukiwiterakovuwurow.pdfIn PDF document text
    • http://3e-recycling.ru/app/webroot/filesfiles/mewuxowu.pdfIn PDF document text
    • http://gulfcoastlist.com/userfiles/file/vogulokokezuwozotanutat.pdfIn PDF document text
    • http://letnipohar.cz/upload/file/jujemaku.pdfIn PDF document text
    • http://cerritos.songhakbbq.com/uploads/files/39411278009.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=far+cry+new+dawnPDF 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_off0000af78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF78 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c78f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC78F 10016 bytes
SHA-256: 5f9ba295f3548ccf59f80c4b420dd05d9f97a383d1166105b7ef6c346d6d5d84
font_02_sfnt_off0000dde9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE9 16208 bytes
SHA-256: 5fcc65abb95b547740f47bd70689d14bba665d7238841f1c2c1ad5d4945481c3

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