Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f62e71e882a9b9f…

MALICIOUS

PDF

79.1 KB Created: 2021-09-10 07:05:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c9bd94a583ad68162678286b2be8c243 SHA-1: 93ee5d3d84eb7a12fec1a0c803a89f811c9bb307 SHA-256: 2f62e71e882a9b9f17950bf365b183597983d14a8d19726c0a2f71868c7c8451
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. It functions as a link farm, directing users to numerous unknown domains, many of which appear to be compromised or disposable hosting. The presence of 'utm_term' parameters in some URLs suggests an attempt to track user engagement with potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://zhxndl.com/uploadfiles/files/36988465574.pdf In PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1612f6471a0b2c---48845979484.pdfIn PDF document text
    • http://dichvutot99.com/webroot/img/files/265091546.pdfIn PDF document text
    • http://mq-water.net/upload/79529563801.pdfIn PDF document text
    • https://mimpi1pusat.com/contents/files/bepatuxikomodeze.pdfIn PDF document text
    • https://clickbox.ro/images/file/vesikevadiwodekutev.pdfIn PDF document text
    • https://sudhirsachdevaclasses.com/ci/userfiles/files/98859726159.pdfIn PDF document text
    • http://xn----8sbfhu6ab4bqv.xn--p1ai/userfiles/file/82732680919.pdfIn PDF document text
    • http://aodaiminhhanh.com/app/webroot/uploads/files/44546362796.pdfIn PDF document text
    • http://kubak-ubezpieczenia.pl/userfiles/file/44499450636.pdfIn PDF document text
    • https://komunalno-vrgorac.hr/files/vafuwunewakelo.pdfIn PDF document text
    • http://otoozevran.com/resimler/files/gabajizisuxom.pdfIn PDF document text
    • http://secretlove.ch/ckfinder/userfiles/files/89564608369.pdfIn PDF document text
    • http://fuhua.tumujike.com/assets/upload/files/202109021359171081.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/files/files/rijamivogikum.pdfIn PDF document text
    • http://montpellier-business-plan.eu/mbp/upload/images/images/upload/ckfinder/putadixukozodixekej.pdfIn PDF document text
    • http://djk-winkel.de/images/uploads/file/49787440645.pdfIn PDF document text
    • http://snuhonors.com/userfiles/file/97358477445.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613a0780c9609---15514948962.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/84973ba6fed68813885197d67c6c1672/4634810801.pdfIn PDF document text
    • https://tradingphrases.com/userfiles/files/sewovotevopilobesinaxi.pdfIn PDF document text
    • http://jiachuankeji.com/upload_fck/file/2021-9-8/20210908091406254308.pdfIn PDF document text
    • https://mgs-on-track.com/app/webroot/userfiles/file/86126256572.pdfIn PDF document text
    • http://tplustech.com/images/ckeditor/files/37001407140.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+do+you+get+free+robux+without+payingPDF 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_off0000cf0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE721 17516 bytes
SHA-256: e06d6ba994081b6650701bc9fb8b44e23ee074f5737f747cba8c96cdcb0c52b7
font_02_sfnt_off000114ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114EA 11096 bytes
SHA-256: a7410578b437f7d745c820315cd6070d9ceb9b3446e6673bfdc68808b88cfdd2

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