Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbc06dc628da994…

MALICIOUS

PDF

76.5 KB Created: 2021-02-19 00:41:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6becf8cd08aa37ef8ed1902a3887a50b SHA-1: f88788387a132a96a782e0e2dc718be8ca35d9ce SHA-256: adbc06dc628da994a916778ea78c9a966b17f467167aaad4adb9fa13ad718cf6
254 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, `https://crophysi.ru/strik?utm_term=honeywell+thermostat+rth2300b1038+wiring`, which is designed to lure users to malicious content. The document also appears to be part of a link farm, with numerous embedded links pointing to external PDFs, likely for SEO manipulation to increase visibility. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://crophysi.ru/strik?utm_term=honeywell+thermostat+rth2300b1038+wiring In PDF document text
    • https://static.s123-cdn-static.com/uploads/4466657/normal_5fffe16b8b22a.pdfIn PDF document text
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/noselupujoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421464/normal_601070291b0ce.pdfIn PDF document text
    • https://cdn.sqhk.co/jukunobegabe/hSjhhap/las_vegas_tour_guide.pdfIn PDF document text
    • https://bupulaserora.weebly.com/uploads/1/3/1/4/131437689/veredub_nusidizado_fukonarivif.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/28aef0e2f10ec.pdfIn PDF document text
    • https://latezuletarok.weebly.com/uploads/1/3/5/2/135298634/ziribikaroroneku.pdfIn PDF document text
    • https://cdn.sqhk.co/lunilageruvu/jgcUOid/barbecue_grill_walmart._ca.pdfIn PDF document text
    • https://cdn.sqhk.co/nigalasiline/v7hgHE7/2650_retro_arcade_machine_console_3d_games_mario.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475383/normal_60041e1e9f326.pdfIn PDF document text
    • https://cdn.sqhk.co/fapiwejagiz/msbjaXb/96845650560.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/bonololezorupotifesa.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/java_offline_installer_pc.pdfIn PDF document text
    • http://zukisofom.epizy.com/blue_prism_certification_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/angielski_w_tumaczeniach_business_chomikuj.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/universal_studios_japan_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/tecnologia_medica_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/firefox_52._6_0.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/89429938731.pdfIn PDF document text
    • http://bomemab.epizy.com/sogoxodadonimikono.pdfIn PDF document text
    • http://bumevibil.epizy.com/carbon_cycle_questions_answers.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_off0000ec61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC61 6076 bytes
SHA-256: 65151e3f180f1a17edf8ffd5d68199a47dfb1f7bf74031eaa4085ca9aec899fa
font_01_sfnt_off000100f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F2 10492 bytes
SHA-256: 1ea001a7bc8fdf6fc403820bb48e8c442df36f678b7f866b6929559672fc365a