Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2d90367a9232cf…

MALICIOUS

PDF

82.8 KB Created: 2021-05-18 01:05:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d8d69b94e108ef6a36a8a6313678933 SHA-1: 23aab52223a1ac1dff1b57c74f5a4d54cce51e6b SHA-256: af2d90367a9232cfcf164022917b1f97dacb598df6ab3e3059c7b16ad51eac37
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. Heuristics indicate it's a phishing attempt, and ClamAV detection confirms it as malicious. The document body, though heavily obfuscated, suggests a lure related to 'reading comprehension exercises' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://seumenha.ru/strik?utm_term=simple+present+reading+comprehension+exercises+pdf
    • https://xapugugividus.weebly.com/uploads/1/3/5/2/135298581/zezav.pdf
    • https://jipedopifuxo.weebly.com/uploads/1/3/4/0/134042804/7428090.pdf
    • https://gijagexerifaru.weebly.com/uploads/1/3/5/3/135322880/b79170735.pdf
    • http://mukedasimewiri.22web.org/97951489238.pdf
    • https://kezeminitiwo.weebly.com/uploads/1/3/4/4/134476020/mapalotarosodid.pdf
    • https://nerupeke.weebly.com/uploads/1/3/1/4/131483009/9420551.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tapopopabe.rf.gd/dixonuxumevefusonunot.pdf
    • https://s3.amazonaws.com/nefagolom/54723754983.pdf
    • http://jugixumob.rf.gd/59171638309.pdf
    • http://punejiva.epizy.com/54486280710.pdf
    • https://uploads.strikinglycdn.com/files/6479bb95-9903-49bc-8b88-c2c6e53182bb/apple_bluetooth_keyboard_pairing_samsung_tv.pdf
    • https://uploads.strikinglycdn.com/files/9e48cdad-4d20-45e7-86d5-cb956451c16a/26161261288.pdf
    • http://kezijewuzal.epizy.com/financial_budget_worksheet.pdf
    • http://kuwemujureza.epizy.com/teoria_del_bienestar_social.pdf
    • https://uploads.strikinglycdn.com/files/34c072fc-dec9-47c1-a03e-cbd079bfd77e/pentax_k30_battery_charger.pdf
    • http://mivogunav.rf.gd/apna_time_aayega_lyrics_in_english.pdf
    • https://uploads.strikinglycdn.com/files/c851e414-cf70-49d8-b0d2-8e67bd1a3058/how_to_replace_filter_on_robinair_34788ni.pdf
    • https://s3.amazonaws.com/nakuzafol/what_games_do_7_year_olds_play.pdf
    • http://fejivexol.epizy.com/pijoxaxevobokivopili.pdf
    • http://pufaperimixalet.epizy.com/nuwasorinojewosimup.pdf
    • https://s3.amazonaws.com/mejados/61408059383.pdf
    • http://bojumimo.epizy.com/aluminium_perforated_sheet_manufacturers_in_mumbai.pdf
    • https://uploads.strikinglycdn.com/files/f5659d22-f1bc-4763-b526-d93c94d4b798/32891705487.pdf
    • http://sitirij.rf.gd/morivisiwetod.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_off0000ed83.bin
f320ee0c10f961864c9ea03f0aa8d87e8a7cf315c46c9bda796f97a9bceff17d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED83 5740 bytes
font_01_sfnt_off000100e7.bin
e04bb3fa75e8ecd64fe16cc128d50e3bdcc2aba92ce09e25dc3a138b2f16ef53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100E7 10868 bytes
font_02_sfnt_off000125db.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125DB 16204 bytes

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