Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa697ae0fc02e21f…

MALICIOUS

PDF

89.7 KB Created: 2021-04-05 10:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c30d46c1e007c306f16e29262754c7f4 SHA-1: 23f9598c884b2ae976aca7a5ecdbc3dd71ebbd5f SHA-256: fa697ae0fc02e21f31908de5ffb95597f108cd0b4f7ef9e6df2540ba163df17b
96 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with one specifically identified as a lure for 'sentence structure worksheets for grade 3'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://xezojetit.ru/strik?utm_term=sentence+structure+worksheets+for+grade+3
    • http://natikolom.site/english_words_list_with_telugu_meaningdsmby.pdf
    • http://wozuxel.getenjoyment.net/fomobobujexubuv.pdf
    • http://vykupavto54.ru/35680725878klp7l.pdf
    • https://cdn-cms.f-static.net/uploads/4470696/normal_603f378417702.pdf
    • https://cdn.sqhk.co/baduvezemu/e2ji72U/architecture_company_portfolio.pdf
    • https://gidutuzewefira.weebly.com/uploads/1/3/1/3/131380066/logewoj-zikaseso-wavun.pdf
    • https://talovilivakalod.weebly.com/uploads/1/3/5/3/135326419/vebotavepebi.pdf
    • http://loduwij.scienceontheweb.net/54746274149.pdf
    • https://cdn.sqhk.co/sixitigoxeto/VtfoXhb/mortal_kombat_11_ultimate_ps4_amazon.pdf
    • http://lutafem.getenjoyment.net/59429660532.pdf
    • https://cdn.sqhk.co/bitomasijelo/jcii2l8/car_wallpaper_hd_for_iphone_xr_4k.pdf
    • https://cdn-cms.f-static.net/uploads/4405459/normal_5fdb08d36a4fb.pdf
    • http://sewatumafuta.medianewsonline.com/calendario_mundial_2020_para_imprimir.pdf
    • https://xifugewelude.weebly.com/uploads/1/3/4/3/134353264/b883513964f71a.pdf
    • https://cdn.sqhk.co/satidaruxami/ejabDia/gaxigomerokilopetexetovij.pdf
    • https://feronokemafa.weebly.com/uploads/1/3/1/1/131164109/7128828.pdf
    • https://static.s123-cdn-static.com/uploads/4476282/normal_5fcf046a7cf8a.pdf
    • https://cdn-cms.f-static.net/uploads/4366388/normal_604b1799d4e75.pdf
    • https://magudutetu.weebly.com/uploads/1/3/1/4/131437318/9b870c515a9d1aa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://puwurivetib.epizy.com/sajazurigip.pdf
    • http://gitogopafo.epizy.com/impulsive_force_model_worksheet_2_answers.pdf
    • http://rirazito.epizy.com/autumn_tale_piano_sheet_music.pdf
    • http://sidesapamapa.epizy.com/1719640368.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc51.bin
c9075958d6ae2730262b2250995757efd055d05dfe9bae22af78eab24294d71c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC51 5508 bytes
font_01_sfnt_off00010f10.bin
f67bd4da3ecdfb5178400a30caa1db7aaa14ea6e8b14d59a06140d2adae94819		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F10 11224 bytes
font_02_sfnt_off00013584.bin
c6d177dd30d395e9060e148723578c55e109ed4275642439632739a62bb8e54c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13584 16104 bytes
font_03_sfnt_off00014a50.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A50 4324 bytes

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