Malicious PDF — malware analysis report

Static analysis result for SHA-256 d351bb540e43fd07…

MALICIOUS

PDF

78.1 KB Created: 2021-03-13 16:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4ce86e8bf17a92b395331e0de5201bad SHA-1: b77b597df2d535af21bbf8a55ab5140a8e4bb883 SHA-256: d351bb540e43fd07acb853a9209ae6fa18affcd797b99cc7d76203a7a7b4aacf
134 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm by heuristics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://golowaki.ru/wix?keyword=tesla+code+secrets PDF link annotation
    • http://sadovik.me/2002_buick_century_engine_size8x95v.pdfIn PDF document text
    • http://pobegikobej.iblogger.org/brighton_and_hove_council_housing_application_form.pdfIn PDF document text
    • https://delidago.weebly.com/uploads/1/3/0/9/130969485/cc8fd3bd.pdfIn PDF document text
    • http://rankingcoach-seo.com/best_offline_spanish_english_translation_appea1if.pdfIn PDF document text
    • http://boomerangoo.site/rotipugipekj7s6q.pdfIn PDF document text
    • https://pusotovoxidelo.weebly.com/uploads/1/3/1/6/131637553/ninixulu.pdfIn PDF document text
    • https://zozetaxurumel.weebly.com/uploads/1/3/4/5/134590082/7931511.pdfIn PDF document text
    • http://7gusevshop.website/home_theatre_projector_buying_guidezre6p.pdfIn PDF document text
    • http://losinglotterynumbers.com/rarovunoizf2.pdfIn PDF document text
    • http://keepmaxi.space/what_does_methanol_fuel_smell_likeoextp.pdfIn PDF document text
    • https://dinowupeguf.weebly.com/uploads/1/3/1/3/131379410/0075e494e.pdfIn PDF document text
    • http://azorocheat1.xyz/clark_forklift_service_loginyrtjs.pdfIn PDF document text
    • http://soluzixod.66ghz.com/68068779320.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://jiforexawa.rf.gd/salokiditapepijilexavobu.pdfIn PDF document text
    • http://najirukijo.rf.gd/26215183637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63856bc3-3d87-40d9-8898-906153d97231/sebojo.pdfIn PDF document text
    • http://lirepemewepe.rf.gd/funale.pdfIn PDF document text
    • http://nonogopikizezed.rf.gd/pumaliv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2b73205-c9f1-4d3c-9074-427989797b40/48010245940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebe636a0-04ea-4f3a-a794-a493ecd07e17/story_of_the_eye_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/055637b7-f68f-4ce9-8c2c-3d60138935b9/wasaxekidoxoregebexe.pdfIn PDF document text
    • http://zijegoragakodis.epizy.com/41320238643.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE979 4516 bytes
SHA-256: cffa7ef905008f58c0395a8d72c249359d6aa24ecbc6851906a6b0f81a1bf007
font_01_sfnt_off0000f8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D6 10628 bytes
SHA-256: 256013d7404f964c60d04a948d328fc228b806afdae8ae79802602de0a2e0978
font_02_sfnt_off00011d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0E 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71