Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a9e7305e2e642a1…

MALICIOUS

PDF

179.3 KB Created: 2021-04-20 23:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90d392379240d1661d917f22a37c5496 SHA-1: cb5aeb49f8c8b215b00e2747053f9416763959be SHA-256: 6a9e7305e2e642a1195bc503b2fe209c138cd5507d384265dc8373f47e75dd4e
134 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, with one specifically pointing to a suspicious domain ('nipisod.ru') that is likely part of a phishing or malware distribution campaign. The 'ML_NYX_PDF_MALICIOUS' heuristic and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a link farm and urgency lures suggests the document's purpose is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nipisod.ru/strik?utm_term=les+miserables+musical+composer
    • http://merulabodonulu.iblogger.org/suponivegufiduvifilevox.pdf
    • http://ziponep.22web.org/21395993415.pdf
    • http://memowelubi.mygamesonline.org/24396044974.pdf
    • https://cdn-cms.f-static.net/uploads/4454821/normal_601bdf296b63c.pdf
    • http://pebunoguge.mygamesonline.org/75343458363.pdf
    • https://cdn.sqhk.co/xalibolopov/cxt5N3e/best_sound_effects_for_youtube_download.pdf
    • http://thecet.xyz/whats_the_definition_of_breach_of_trust4z5w3.pdf
    • https://cdn.sqhk.co/xeribaba/hgiYxie/38057671611.pdf
    • https://cdn-cms.f-static.net/uploads/4392451/normal_60464ca994cce.pdf
    • https://cdn-cms.f-static.net/uploads/4420599/normal_6015f45de21a8.pdf
    • https://static.s123-cdn-static.com/uploads/4417644/normal_5fde787f28b03.pdf
    • http://fejiximodanu.mygamesonline.org/bbc_compacta_class_11_english_answers.pdf
    • http://sluzhba1.net/book_of_jasher_audio_free_downloadjvo0g.pdf
    • http://itprod.space/chris_stapleton_songs_lyrics_and_chords7xbyn.pdf
    • https://cdn-cms.f-static.net/uploads/4402517/normal_604d21cdc6d34.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fumojaj.epizy.com/6703962848.pdf
    • http://lunujodebukifes.epizy.com/totosemabekirot.pdf
    • https://s3.amazonaws.com/ximupuv/34033592457.pdf
    • https://s3.amazonaws.com/bidemewufa/mugaredoxidiluresid.pdf
    • http://seluzapiz.rf.gd/89105167726.pdf
    • https://s3.amazonaws.com/tokudapele/xufuwu.pdf
    • https://s3.amazonaws.com/kibavutibeved/digital_clock_worksheets_grade_2.pdf
    • https://s3.amazonaws.com/sazariwapa/amiga_emulator_rom.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002676d.bin
c5df36d194d176e1e06e3875b7e76a52e72362d56594a8cc528a1b90e9bd22a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2676D 5160 bytes
font_01_sfnt_off000278e1.bin
d8628c5644bea103ab0feeb60b3bf9d6840a053948ae7ad63ae5c61e05f5cf3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278E1 14900 bytes
font_02_sfnt_off0002a700.bin
0bf397e83b3d1943fc2d7fa701f1052d8619ffe33fd16bc08e2d9f01316b5faa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A700 16292 bytes

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