Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2fbee2fe3b1463…

MALICIOUS

PDF

72.5 KB Created: 2021-06-10 19:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b0b8e6cff00d8fb2600773272a23b81a SHA-1: 3c6014c4f877c3ec110ed72400896fe87a79d33b SHA-256: ae2fbee2fe3b1463dd704cac5682b03401be0b30949513a0da36c6522151f206
164 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The numerous embedded URLs point to compromised websites, suggesting a phishing or malware distribution campaign. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this file is part of a malicious workflow designed to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ketchas.ru/uplcv?utm_term=car+parking+glitch+car+apk PDF link annotation
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/4f45ea81eadeb1a8e74ac02d1bb779aa/gasetirabob.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/c3cf7ec5fecdcf27783fd2db539d6e3d/guxejejebepita.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/hkqvig3q68r018jp02g0dtoj32/sanowavudijivabepigi.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/wejaxotetebeganimoji.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/38759090277.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/bb2d40d4ada5759acc720106e40d4571/623721304.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a2613d329ce---kugapotuzogefo.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/e7e2e2fc3718206d6b63cedecd071adf/5333196310.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/a3c8bed10da4fc34ac46b34ab1ec3da1/pupozu.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/02t72et05n6urqe5lvhnb93df7/xopil.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/ek77oep035m8aokvvosia78pv2/wojegefulaworanonazasos.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/0c57ece121503dfb1f905bfcc78cfcaf/tevokufazajasijuz.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/0d5885f0362acd474f98e1ee6294cc93/pinozelopepamadagefe.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607db3c78aa8e---basapiremibazo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE6 4984 bytes
SHA-256: 5e454891593abd1aa1e19be0900aedcbff219a96706c2f203e1710d330f97e0d
font_01_sfnt_off0000f0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D7 11020 bytes
SHA-256: ee9b2a17f26cadac19684d9e144ea3d90e22399159f90bb305f842f0c60b99b5