Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3df652eda0f058…

MALICIOUS

PDF

79.0 KB Created: 2021-03-10 23:44:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f16298d34e6ab15b94e8d8d400ff0956 SHA-1: a0bfab49040b111349b0930e6373f2f9e8a87299 SHA-256: ee3df652eda0f0582b821d32f8d873a8d63c0af52812eb2f94ccdb87ad6d9852
126 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution lure. The presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://vilenefex.ru/strik?utm_term=polar+coordinate+paper+pdf PDF link annotation
    • https://koneligave.weebly.com/uploads/1/3/4/5/134581264/wafobepenas_dabonafoxul.pdfIn PDF document text
    • https://porujeworor.weebly.com/uploads/1/3/2/8/132814718/gizufo.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/kRgfCPF/onedrive_login_error_0x8004de25.pdfIn PDF document text
    • https://xuvuvigaxopezut.weebly.com/uploads/1/3/4/7/134721928/9468116.pdfIn PDF document text
    • https://barosowuni.weebly.com/uploads/1/3/1/3/131398377/sotiliboxanokubuwi.pdfIn PDF document text
    • https://cdn.sqhk.co/zezegawutogu/g4opOkn/nuxom.pdfIn PDF document text
    • https://rixifumalig.weebly.com/uploads/1/3/1/4/131437092/6778224.pdfIn PDF document text
    • https://nazigexasuv.weebly.com/uploads/1/3/6/0/136081917/ee95d4dcd9fea.pdfIn PDF document text
    • https://cdn.sqhk.co/rokabumake/exOiejg/close_air_support_ltd.pdfIn PDF document text
    • https://cdn.sqhk.co/memenewo/jePwjhS/piano_course_for_beginners.pdfIn PDF document text
    • https://revunipaletofux.weebly.com/uploads/1/3/0/8/130874393/zexeronap-tefidevujogu-zojujanidub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nalakakowim.epizy.com/zelda_ocarina_of_time_sheet_music_violin.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/14805110398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41d7e914-bf1d-48c2-8181-e01f1335a267/8442642099.pdfIn PDF document text
    • http://lilufafuf.epizy.com/16705382878.pdfIn PDF document text
    • http://jakibijujaxaxof.rf.gd/central_park_5_book.pdfIn PDF document text
    • http://jigiwema.epizy.com/78371612446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7deebef-9d20-478b-ab1b-4e50d0782c3e/kali_linux_for_raspberry_pi_zero_w.pdfIn PDF document text
    • http://liwivudelaje.epizy.com/what_did_the_mandate_of_heaven_explain.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/pokemon_gba_emulator_for_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/allahabad_kondapuram_songs_in_naa.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/20799320665.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2223dbf-4fde-42ab-bf36-e012c0d05a48/skywalker_trampoline_15_ft.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_off0000f576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF576 4972 bytes
SHA-256: 072dd2b199fa87a16f158b6c66dee65070841deac34d52b573edba0209754c24
font_01_sfnt_off00010674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10674 11632 bytes
SHA-256: f09342f5651e94bad2d85c400f8072806735b585d46baac5c0ad827f8b6fd2c7

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