Malicious PDF — malware analysis report

Static analysis result for SHA-256 61be1e8ebf79f983…

MALICIOUS

PDF

96.0 KB Created: 2021-05-27 07:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 44c6d2beda751e82c6836e7c94ca29f7 SHA-1: 6ec77d5a2412c6ab0500d8ce927dfe48385de434 SHA-256: 61be1e8ebf79f98311222bba3b05d23e47292b7cec6895b3dd57ce76b4eefe93
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The PDF contains a large number of external links, many pointing to unknown domains, suggesting a link farm or phishing attempt. While no scripts were explicitly extracted, the PDF structure and the nature of the heuristics suggest it's designed to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 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.
  • 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://jadowusirufire.weebly.com/uploads/1/3/2/7/132740355/323ca681.pdf In PDF document text
    • https://xavuzilutose.weebly.com/uploads/1/3/1/0/131070872/nusixuxesokoz.pdfIn PDF document text
    • https://tofisijola.weebly.com/uploads/1/3/4/8/134863845/193399abaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403673/normal_5fc8de29a352b.pdfIn PDF document text
    • https://vizakadaji.weebly.com/uploads/1/3/4/4/134491897/5204767.pdfIn PDF document text
    • https://bobiputab.weebly.com/uploads/1/3/2/8/132814039/pijidexuse-dodukupasowa-garoretow-wajeb.pdfIn PDF document text
    • https://tizizuner.weebly.com/uploads/1/3/1/8/131872037/vusidalozu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374686/normal_5ff3fc877dad8.pdfIn PDF document text
    • https://kexiwiwimibip.weebly.com/uploads/1/3/1/3/131379584/0814a532.pdfIn PDF document text
    • https://fogajabewe.weebly.com/uploads/1/3/4/1/134131707/865214de7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506131/normal_6031b07e5e916.pdfIn PDF document text
    • https://zorivaleguzovul.weebly.com/uploads/1/3/4/5/134596353/ee0b2bdf144c21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485704/normal_602c432dd2673.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496005/normal_5fca12381f2c4.pdfIn PDF document text
    • https://dubuvolikumo.weebly.com/uploads/1/3/4/0/134012832/ffb639f43fd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/mO-5lVq97NI/wb?keyword=d&d%203.5%20psychic%20warrior%20handbookPDF link annotation
    • https://uploads.strikinglycdn.com/files/0235262b-aa72-4cdc-af71-e496b37fc021/briggs_and_stratton_engine_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00c8aa20-6f97-4b00-9113-61a4693096f0/gavogakaxasadexozusuwuvak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99df624f-31d5-43c5-abd5-076bde62094b/feratubozofitowejeraxov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b95345d-ed6f-4116-bd21-eda5a354e406/39885797476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a24f77c-f98c-4a9e-a0ad-2373a895fab7/free_download_mp3_koes_plus_full_album_rar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38fce6e5-f3c8-4f9a-b0c4-8056bcad0f3c/how_would_you_describe_the_tone_of_the_poem_indian_boy_love_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f02ce2d-2034-4d52-8d73-68febf8c6fbd/how_to_spot_lies_like_the_fbi_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80e31f23-70ab-41cb-825f-7994d4b00811/10.snf_matematik_2.dereceden_1_bilinmeyenli_denklemler_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a1a3cd2-e745-4dd5-aa54-32aee834926b/fofawubovibaguxuzaxubuwax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31890a78-ff3d-4d7d-9037-b9c02a7112cb/how_to_use_a_miller_syncrowave_250_dx.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D33 4156 bytes
SHA-256: 4137e011fb50e940388b7a91a31e36f70741d8ce55ef6fbc7fb0314564e06879
font_01_sfnt_off00014b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B63 11636 bytes
SHA-256: 1e979d73e064ac20767676dc2c8fff0b963b4e8508e5627e1fa2d69c28a87b2b