Malicious PDF — malware analysis report

Static analysis result for SHA-256 14baa93e5f49ae2e…

MALICIOUS

PDF

76.4 KB Created: 2021-04-04 20:55:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 68901dd8e9ab86680dfebeb169abfae9 SHA-1: 0cd0bffa95df5b26278253934dd765a396b4f629 SHA-256: 14baa93e5f49ae2ea7a7c18fd963e5f94dbd10f7e11b6d8aaac926996453e64c
166 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

The PDF contains multiple external URIs and is flagged by ML classifiers as malicious. A critical heuristic indicates a 'Clipboard command execution lure,' suggesting the document instructs users to copy and paste content into a shell, a common technique for executing malicious commands. The presence of numerous links on disposable hosting further supports a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://pelibifir.ru/award?keyword=algebraic+and+transcendental+functions+pdf PDF link annotation
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://cdn.sqhk.co/risejesob/gjEewSB/mimpi_digigit_ular_hijau_di_kaki_kiri.pdfIn PDF document text
    • http://899themes-demo.ru/dileluvokudagomazagaxusam6go6.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/degi9WI/table_tennis_close_to_me.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/zgcb2gf/games_like_spongebob_moves_in.pdfIn PDF document text
    • http://okclub.org/gezezesadofafetoruc0sem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487894/normal_5fe6edbae4582.pdfIn PDF document text
    • http://healthit.space/453594922897r4yr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489598/normal_600801747bc31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405414/normal_600a9350c6b8c.pdfIn PDF document text
    • https://cdn.sqhk.co/remigalakefo/ibhhjjE/xerowenima.pdfIn PDF document text
    • http://silkhfig.bid/windows_10_iso_image_free_download_64_bitaame6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://76bf09fe-c378-4d6f-baa9-beaf48595a8b.filesusr.com/ugd/61567a_eb47750c545047ddbe9d37274ef8a56f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mipeboro/rifinufegifuz.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/aakasha_ganga_malayalam_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a12f60c4-fe32-4ecf-8b6f-800ea317895b/10349273982.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/tadoredunaforonogevu.pdfIn PDF document text
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_926365b9c3b94ea58dac954bcbaf9d22.pdf?index=trueIn PDF document text
    • https://8c285b57-3156-47ce-881b-df665acc117b.filesusr.com/ugd/8d46c2_c3a29edca9aa4ce4938d82c145244a52.pdf?index=trueIn PDF document text
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_aef4002df0a44e87854016bb385807e0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/vpn_free_apk_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/kefalonia_road_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1e35da2-6603-4ba6-883e-54745c09abc8/pomixawitudunuked.pdfIn PDF document text
    • https://e8677ced-6330-435e-8237-200fb10408a4.filesusr.com/ugd/a4c1fa_9f88038b267e48b495e0d6f7eb444b68.pdf?index=trueIn 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_off0000ec72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC72 5452 bytes
SHA-256: bf37a2e9df609064a8707c2d88e82017ccce115d245d8373001c73a0aac1f0ab
font_01_sfnt_off0000ff0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0A 10436 bytes
SHA-256: eb593b7ae9fd214b8f5597b479f318459c6830bc45ed43d08de7eb9658bed799

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