Malicious PDF — malware analysis report

Static analysis result for SHA-256 36c5520c869212db…

MALICIOUS

PDF

78.5 KB Created: 2021-04-21 22:42:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b14feaeadf0ae48035727d77f53ec11 SHA-1: 597ce2d6167c2e597be4a1b13981f4e0cdb006b4 SHA-256: 36c5520c869212db484c1b98417a81a2459f4f8ab8b73971e0c4e24d1c75ebad
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious URL, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to device comparisons, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/strik?utm_term=garmin+edge+800+vs+520+plus
    • https://cdn-cms.f-static.net/uploads/4403276/normal_602e1163a9a33.pdf
    • http://laromuwutekino.22web.org/dewovefuviwokofi.pdf
    • https://wuvonavozaf.weebly.com/uploads/1/3/2/6/132695620/suwab.pdf
    • https://static.s123-cdn-static.com/uploads/4482636/normal_5fca7093bd789.pdf
    • https://cdn-cms.f-static.net/uploads/4367947/normal_605330d81cd90.pdf
    • https://budamasut.weebly.com/uploads/1/3/4/9/134903336/wafegali-jeniruzoxal.pdf
    • https://cdn-cms.f-static.net/uploads/4450249/normal_60335c16cc415.pdf
    • https://cdn.sqhk.co/kafufojugure/dMhajhI/monster_hunter_4_killer_beetle.pdf
    • https://static.s123-cdn-static.com/uploads/4377125/normal_5fc8c44162632.pdf
    • http://nikupajosokob.22web.org/gabutivazanunuroga.pdf
    • https://cdn-cms.f-static.net/uploads/4484812/normal_6027bc2ed358f.pdf
    • https://gufakapefevem.weebly.com/uploads/1/3/5/9/135994046/zopadisukoka_suxuz_tebumofa.pdf
    • http://kalewolasufer.22web.org/appareil_reproducteur_masculin.pdf
    • https://cdn-cms.f-static.net/uploads/4411483/normal_601b2fc68e979.pdf
    • https://waxagenejefud.weebly.com/uploads/1/3/4/7/134712445/vixazebeworopop-wubikubilanefel-nujixetepulugef-tuvopejubat.pdf
    • https://cdn.sqhk.co/zofizitene/ibxdsjj/vodewubumidenid.pdf
    • https://cdn.sqhk.co/virixerusupa/esijjfm/go_fish_video_game_online.pdf
    • https://cdn.sqhk.co/gipagigo/8ghcR3I/18961023860.pdf
    • https://static.s123-cdn-static.com/uploads/4474988/normal_5ff42b2b370e0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://toxogeparami.epizy.com/french_english_bilingual_visual_dictionary_free.pdf
    • http://mekavebij.epizy.com/39352270962.pdf
    • http://rakulewozagax.rf.gd/olympic_weightlifting_exercises.pdf
    • http://mikovugeg.epizy.com/wimatiwasasaz.pdf
    • http://vutoworaraz.epizy.com/tirijagelugo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f36b.bin
dfa608db209e957ed755df62c05ce7c70de2653e8a32d6504bde18ea5d5a442b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF36B 5960 bytes
font_01_sfnt_off000107a7.bin
b4af079bb5d479303e64427fbe37fc8639285347f9e01718e46967bb40a5baba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107A7 10884 bytes

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