Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5f6a17f47b9db5…

MALICIOUS

PDF

79.5 KB Created: 2021-04-30 23:12:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff91124723265fe9a590ab4e807428ac SHA-1: 214fc6410eeea400222eff0e63546450cc6e018a SHA-256: 3d5f6a17f47b9db5a7af77baebae1e7758e214f88627c9ccc9c39da49df0992d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a malicious domain, as indicated by multiple heuristic firings and ClamAV detection. The ML classifier also strongly flagged this PDF as malicious. The embedded URL likely serves as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=what+time+period+is+considered+ancient+china
    • http://upsbox.ru/conjugating_ar_verbs_in_spanish_songe0qpl.pdf
    • https://wofarugufi.weebly.com/uploads/1/3/4/6/134657174/2b948.pdf
    • https://cdn.sqhk.co/jetuzama/iaShdq1/wedododesezejobar.pdf
    • http://ital-girl.space/681708908879rusw.pdf
    • http://drive4mclaneeffingham.com/jatugerokesznjsj.pdf
    • https://cdn.sqhk.co/vopofuxo/geidsRu/xekizixojodawamegugajuke.pdf
    • http://mscredit.info/jeu_de_carte_a_2_gin_ramipv72h.pdf
    • http://sedovarubabozop.iblogger.org/39089658102.pdf
    • http://igcopyrightverify.com/muqaddimah_ibn_khaldun_in_urduj2a93.pdf
    • http://disconto50.info/aladin_2009_full_movie_bluray1pig5.pdf
    • https://cdn.sqhk.co/daguvemet/gdghhda/sotuvunexabejabokug.pdf
    • https://cdn.sqhk.co/barugogip/khhJhev/oscar_fish_price_in_kerala.pdf
    • https://vogaxuruxav.weebly.com/uploads/1/3/4/3/134352923/a25ffb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vavejijitatofu/foneporefezog.pdf
    • https://s3.amazonaws.com/polexebuj/how_to_level_up_fast_eso_2020.pdf
    • https://s3.amazonaws.com/niporofez/14114254067.pdf
    • https://s3.amazonaws.com/jedaxopopuko/molevabuf.pdf
    • http://zovawawopo.rf.gd/mehandi_circus_movie_tamil_hd.pdf
    • http://jowevoxajez.epizy.com/eba_guidelines_new_definition_of_default.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f016.bin
f2d358913f0c11de7848b9770fc454a66ddcc83f180499ac4fbc45aa5cfb8e2f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF016 3012 bytes
font_01_sfnt_off0000fadb.bin
942456fae20c362e50d5758b9a1250530a3fe58e09920e42493b9dc11c6f9964
pdf-font-stream PDF embedded font (sfnt) at offset 0xFADB 5296 bytes
font_02_sfnt_off00010cbc.bin
bac707c18bf7ab2314a92fcc143b85da29bf1e5e1abe6c22a054a2a4a31686bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CBC 10388 bytes