Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5a410265937137…

MALICIOUS

PDF

102.4 KB Created: 2021-02-15 10:02:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a303e149391794441456af574e0ab9ca SHA-1: ce6cc119b90f7700f1239594253ed02751e5d990 SHA-256: 2d5a4102659371372a8dfc215f1346b424538db5f83088c0953291588aabbfb8
146 Risk Score

Malware Insights

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

The sample was flagged by ClamAV as a phishing trojan and ML classifier indicated high maliciousness. The PDF contains numerous embedded URLs, with one specifically identified as an external URI pointing to a suspicious domain. The heuristic 'SE_CALLBACK_LURE' suggests a phishing pretext, likely related to billing or security issues, to trick users into clicking the malicious link. No scripts were extracted, but the overall structure and URL usage are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://druttle.ru/123?utm_term=bugbear+barbarian+rogue PDF link annotation
    • http://laura-egorova.ru/287260235507lzmf.pdfIn PDF document text
    • http://shop-profildoors.ru/swayam_prabha_app_freejyq8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389384/normal_60096c6ca7244.pdfIn PDF document text
    • http://idealica-italy.site/80th_birthday_party_invitations_templatesf7g8j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367273/normal_5ff1092255897.pdfIn PDF document text
    • http://itravelimpressions.com/traffic_rider_mod_game_free_downloadk5doy.pdfIn PDF document text
    • http://tobalalupuvobiv.iblogger.org/buzupovudajesagan.pdfIn PDF document text
    • http://mybatut.store/utah_rifle_elk_hunt_datestlp7o.pdfIn PDF document text
    • http://storefromit.pro/figaxuwikaoqtw2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402745/normal_5fdd481b99147.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471704/normal_601b81aab99e1.pdfIn PDF document text
    • http://yesstore.pro/ramumepage19c67.pdfIn PDF document text
    • http://debegezuvume.iblogger.org/tuvanedapaxuzowajura.pdfIn PDF document text
    • http://begemotiks.fun/grouped_data_mean_worksheetake08.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/divexikav/activation_lock_removal_software.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/autocad_lecture_notes_in_urdu.pdfIn PDF document text
    • http://bupikizatigog.rf.gd/free_preventive_maintenance_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/gobuxivabatebikuzinatefad.pdfIn PDF document text
    • http://retesatitogeli.epizy.com/vuxekoke.pdfIn PDF document text
    • http://gozipoxux.rf.gd/terraria_wiki_guide_voodoo_doll.pdfIn PDF document text
    • http://zewebuguv.epizy.com/remittance_advice_template_excel.pdfIn PDF document text
    • http://jopatodorijapu.epizy.com/44638485134.pdfIn PDF document text
    • http://zekubegem.epizy.com/63967699251.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F48 4832 bytes
SHA-256: 905c5b0eccb818735d69cf387f90691aa10a1150785c8727679fcd58ea7cbc74
font_01_sfnt_off00014fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FCE 11064 bytes
SHA-256: f33d7cb34c3a76c256036432c2cec3253fc873e9a3f49b02209b154762e21fa0
font_02_sfnt_off000175f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x175F3 16392 bytes
SHA-256: c9b9d40238817e9fd1c0b290bb100284b8f2d9dcc1188338581b9d27efa8fa30