Malicious PDF — malware analysis report

Static analysis result for SHA-256 905be547811b849e…

MALICIOUS

PDF

96.2 KB Created: 2021-03-12 19:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ed8e5dcb95429e2112d230830b847341 SHA-1: d93684e35e7a81471a414c959aaddea41300d2a5 SHA-256: 905be547811b849e29ad6774f46a649190595c369f49c0d7f35425f83c567727
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights the use of link farms on disposable hosting, suggesting an attempt to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://maypoin.ru/wix?keyword=educational+psychology+woolfolk+pdf+download PDF link annotation
    • http://siankaanmexico.com/334938088884oxov.pdfIn PDF document text
    • https://cdn.sqhk.co/janezewufaj/gjhbj0a/national_geographic_channel_live.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/igjighy/diced_turkey_noodle_casserole.pdfIn PDF document text
    • http://guitar.su/the_emotion_machine_marvin_minsky_downloadezupt.pdfIn PDF document text
    • https://cdn.sqhk.co/lajoroteb/higfgja/forbidden_planet_blaster_replica.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/qjeLian/6614452889.pdfIn PDF document text
    • http://5-euro.info/chapter_18_viruses_and_bacteria_worksheet_answer_key80rzj.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/ibgghdY/zerikogozegatiget.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvuzebilet/qhbiefs/90676058247.pdfIn PDF document text
    • http://harkateine.fun/sig_sauer_x5_legion_holstertvvxa.pdfIn PDF document text
    • https://cdn.sqhk.co/bemoranoz/oiAiaXM/bunny_boo_bratz.pdfIn PDF document text
    • http://bupro.asia/evh_5150_iii_100w_vs_stealthbnxcw.pdfIn PDF document text
    • http://gazajujana.mygamesonline.org/vokudevagijamumuduse.pdfIn PDF document text
    • http://futajef.medianewsonline.com/87845981081.pdfIn PDF document text
    • http://mastericy-chistoty.ru/best_apple_watch_6_screen_protector820ur.pdfIn PDF document text
    • http://mavito.online/2019_lexus_gx_460_gvwrsyfry.pdfIn PDF document text
    • http://bukobaxaz.getenjoyment.net/68269423535.pdfIn PDF document text
    • http://cloudplay.xyz/samsung_top_loading_washing_machine_repair_manualzxxdw.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C09 5300 bytes
SHA-256: b64286400669236f84530f4a54145ad9d782d48a7b255e9cd638f4c8d0e3be66
font_01_sfnt_off00013e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E1F 11904 bytes
SHA-256: a41b4b908b633e40bd8d6582589f8debc4f4376ea4b936aa28124bf5eb9c87ec
font_02_sfnt_off00016568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16568 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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