Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3f410b1b3639336…

MALICIOUS

PDF

72.5 KB Created: 2021-05-01 23:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0df7d07e7f0f0321e37a4bb2a18866a0 SHA-1: 02b845016117b552335718d63c8fa5fa5d97af50 SHA-256: a3f410b1b363933613a5e09ecd91eaaeb2239d3041edda6c9a02a1e3fd959132
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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://leonvi.ru/strik?utm_term=metallica+nothing+else+matters+guitar+chords PDF link annotation
    • http://good-production20.site/how_to_reset_att_u_verse_routereyu0t.pdfIn PDF document text
    • http://peludofnor.fun/totogitijuwujofesivasati7kib.pdfIn PDF document text
    • http://paypallsecurity.com/how_do_you_save_a_video_project_in_imovieg59m5.pdfIn PDF document text
    • http://funiwigurogamu.iblogger.org/98233724138.pdfIn PDF document text
    • http://hiziryigit.online/how_to_cook_a_pernil_puerto_rican_stylegmvzz.pdfIn PDF document text
    • http://stav-games.ru/55650893986fgait.pdfIn PDF document text
    • http://copyright-security-ig.com/9139429852650gbz.pdfIn PDF document text
    • http://xawewusari.22web.org/surge_protection_abb.pdfIn PDF document text
    • http://itslm.fun/us_army_special_forces_groups_locations74pf2.pdfIn PDF document text
    • http://torarofuzavu.22web.org/kekagiwu.pdfIn PDF document text
    • http://opendouche.xyz/28630898356zdgsi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wedinuvudazoxo.rf.gd/enciclopedia_baker_de_apologtica_cristiana.pdfIn PDF document text
    • http://xiluwudikipo.epizy.com/amlodipine_mechanism_of_action.pdfIn PDF document text
    • http://gogewafusa.rf.gd/46536283347.pdfIn PDF document text
    • http://vupifokixen.rf.gd/bike_racing_game_3d_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b080e07c-4f0e-4d2f-b44f-80e40480e9c6/5_out_circle_motion_continuity_offense.pdfIn PDF document text
    • http://tegemikewik.rf.gd/dovawutiginunojevubig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93d9bd50-84c5-4e40-ad60-b3c7a7980298/nozitodofe.pdfIn PDF document text
    • http://zibemivajuwoma.rf.gd/9426106793.pdfIn PDF document text
    • http://suluzaruweg.epizy.com/82234882342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62e452e6-499c-4fc9-a79f-9f579c78a4d5/how_to_unfold_my_treadmill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18ea55be-5d9a-4a15-84da-34310945198b/hyundai_sonata_owners_manual_2011.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d52e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52E 5356 bytes
SHA-256: 167155b7ec9588a1446f02d9e002fd295c1041902ce18b2e38c202928e842c7c
font_01_sfnt_off0000e73c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73C 17456 bytes
SHA-256: 18372d5805de332c3a2d3b81ab2665e9c071c392f09b4537165365f97189924c

Open this report in the interactive analyzer, or submit your own file for analysis.