Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b5b58c6e466965…

MALICIOUS

PDF

78.2 KB Created: 2021-03-18 09:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b08eaf0384eb86ec2ed8a9a26077293f SHA-1: de59b6d081deb2df380ff898ccd8b25c48a92473 SHA-256: 03b5b58c6e46696548d9d71c09379213d3e3c2a9ebea5ecd751aa337276f15bd
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one directly linked to a suspicious domain that appears to be a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://botokaw.ru/wix?keyword=division+of+polynomials+worksheets+with+answers
    • http://leree6.club/damirenedotafeldwkn8.pdf
    • http://paxabak.mypressonline.com/armitron_pro_sport_watch_battery_size.pdf
    • https://jaxipalat.weebly.com/uploads/1/3/4/7/134746428/6998055.pdf
    • http://zugasanuko.getenjoyment.net/what_does_social_contract_mean_dictionary.pdf
    • https://ponuxarazuzega.weebly.com/uploads/1/3/5/3/135328107/9a7bf43.pdf
    • http://sesigugakipezov.22web.org/47512440673.pdf
    • http://vuvulusigi.scienceontheweb.net/tugemadabobudetigoxinube.pdf
    • http://khanapoorti.com/amit_bhadana_video_ringtonevx4rl.pdf
    • http://gujadaxopujidot.iblogger.org/30590260040.pdf
    • http://tidirakozodawon.getenjoyment.net/maya_angelou_poems_woman_work.pdf
    • http://palawawez.mypressonline.com/adrianne_holt_regresa_a_mi.pdf
    • http://kreativoblako.com/whirlpool_dishwasher_quiet_partner_i_manualdgpi1.pdf
    • http://espacecmb.xyz/736523408668flst.pdf
    • https://xozipirun.weebly.com/uploads/1/3/5/3/135324749/6224385.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/26980fee-b448-4ffc-ba34-1b47cd6c6ad4/punching_shear_calculation_example_bs_8110.pdf
    • https://uploads.strikinglycdn.com/files/3f45e2c7-ecee-47c3-aa50-550122988751/2998157505.pdf
    • http://tinulelor.rf.gd/balloon_decoration_pictures.pdf
    • http://kepofif.onlinewebshop.net/vazuv.pdf
    • http://fepusum.onlinewebshop.net/33054505240.pdf
    • http://bexovivuvere.myartsonline.com/fajijufefakalaguximap.pdf
    • https://uploads.strikinglycdn.com/files/52d5fcdb-1c27-421f-a202-537fd88c33e4/84786640375.pdf
    • http://pozijawikubinun.myartsonline.com/78146975519.pdf
    • http://kelovikaxovixu.epizy.com/12_dynamic_bible_study_methods_by_rick_warren.pdf
    • http://nupopejif.epizy.com/lasaletu.pdf
    • https://uploads.strikinglycdn.com/files/4791453d-080a-43a8-94b6-751d84947eb0/brother_xr1355_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/050417b9-829e-4d82-94d8-1e60e25a1ff9/walanitexosubawosanede.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_off0000f0b4.bin
7e63473823988223be6d8728544045d98edecbf5fa5984eebb16436fc71df5fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B4 5460 bytes
font_01_sfnt_off0001033f.bin
5177dca32557af1c9c6cf3d369d81f45a48a530e8b176380fe6175c4a86ab10f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1033F 11880 bytes

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