Malicious PDF — malware analysis report

Static analysis result for SHA-256 8223f752df576c8e…

MALICIOUS

PDF

88.6 KB Created: 2021-05-07 05:20:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: adb6e4273f4d3ff4f4e71e7326b6956d SHA-1: b8ae61277a4fbc56c8ad61645e807db8e83f6d11 SHA-256: 8223f752df576c8e4c89432e4a1eb9ae27b4ecc3ebacfc61d307bc9edf4e3662
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many pointing to disposable domains, suggesting a link farm or phishing lure. The presence of a 'Download' button heuristic further supports a malicious intent to trick users into clicking links. ClamAV detection and ML classification strongly indicate malicious content, likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • 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.
  • 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://xezojetit.ru/strik?utm_term=download+matlab+2018a+for+linux PDF link annotation
    • http://openchambre.xyz/what_are_the_foreign_policy_tools3zic4.pdfIn PDF document text
    • https://ledijonag.weebly.com/uploads/1/3/4/6/134689342/f9ab6c8af3cd8.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/6ggigia/launcher_galaxy_s20_style_mod_apk.pdfIn PDF document text
    • https://juputifewusa.weebly.com/uploads/1/3/4/4/134435955/lelabuzalupokuxetex.pdfIn PDF document text
    • https://cdn.sqhk.co/lojumisebu/hjiaGNf/80358604359.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/b7iiif7/hd_wallpapers_1080p_iphone.pdfIn PDF document text
    • http://pedron.fun/google_form_request_loginiefsa.pdfIn PDF document text
    • https://cdn.sqhk.co/ribafesupuro/w4ejcTH/momupasoxa.pdfIn PDF document text
    • https://kekuxepepave.weebly.com/uploads/1/3/0/7/130739312/2635933d67f4ea.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/lfjc4Cm/40914615280.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/jivegujutuzinur.pdfIn PDF document text
    • https://cdn.sqhk.co/kokijunuxagi/xiiO4ic/codingbat_java_answers_array_2.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/mathematical_statistics_1.pdfIn PDF document text
    • https://xexajuxeleseg.weebly.com/uploads/1/3/4/5/134592224/8befb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE423 6744 bytes
SHA-256: b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
font_01_sfnt_off0000f508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF508 5456 bytes
SHA-256: 12c9590fbfa6bb0652c115cb4a5ce869bfcd719ee14bf82c8478b3a36df0fb20
font_02_sfnt_off00010796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10796 11884 bytes
SHA-256: 7ff8fcb56fa37a1b102fe648f86122d9a77ebab4ef93383f795e634ccf5cfeac
font_03_sfnt_off00013084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13084 16312 bytes
SHA-256: a8a99e61f0dcc39bdebdb55e08eb025040dd1d9add743fdb525387d7be222ed7
font_04_sfnt_off00014644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14644 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361