Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae38ea5e202a5754…

MALICIOUS

PDF

82.5 KB Created: 2021-04-30 11:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2125b5d41813973e9335e7612f739b5 SHA-1: 77149bc3d932784bb5332d11438f83628437f6d7 SHA-256: ae38ea5e202a575495ae90e1e21abe12880d66d9e42f1f0979a2d4b70037df37
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'zajinet.ru', which is likely a phishing or malware distribution domain. The heuristic 'SE_URGENCY_LURE' suggests the document's content aims to create a false sense of urgency to prompt user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://zajinet.ru/strik?utm_term=soccer+strength+and+conditioning+drills
    • https://static.s123-cdn-static.com/uploads/4478664/normal_5fee61938b67d.pdf
    • https://cdn.sqhk.co/sugumujozik/haiaha9/goxexikitufivaf.pdf
    • https://cdn-cms.f-static.net/uploads/4530070/normal_605e03c055c31.pdf
    • https://cdn-cms.f-static.net/uploads/4448341/normal_604dda2c136e4.pdf
    • http://e-devletodeme.net/dell_inspiron_2350_audio_driveri9tf0.pdf
    • https://cdn.sqhk.co/foroboreb/7ibhgie/dragon_quest_builders_switch_walkthrough.pdf
    • https://cdn-cms.f-static.net/uploads/4423728/normal_604b112201cfd.pdf
    • http://wudazex.sportsontheweb.net/africa_toto_piano_sheet_music_easy.pdf
    • http://golixudib.mypressonline.com/povoralenepiropuzomog.pdf
    • https://cdn-cms.f-static.net/uploads/4451230/normal_602a3dac046e2.pdf
    • http://kino-vezde.ru/latest_android_os_for_samsung_note_5myg8d.pdf
    • http://1ux.site/todigivalezobexesu4jq9p.pdf
    • https://cdn-cms.f-static.net/uploads/4370089/normal_601ba89dabca4.pdf
    • http://jedusajinud.mygamesonline.org/33310984628.pdf
    • http://nefupanono.mygamesonline.org/nawukudofisudafabedulan.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://suvowafavij.epizy.com/72888750271.pdf
    • http://danobefaxejo.rf.gd/policy_guidelines_on_inclusive_education_unesco.pdf
    • http://rupazolarena.rf.gd/resonant_circuit_oscillator.pdf
    • http://vonolukover.epizy.com/background_designs_for_brochures_free.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_off0000f7f4.bin
68ad64e40b855b066e82aa8a3023c79e30277932d6298c24e7b6887196b8d010		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F4 5092 bytes
font_01_sfnt_off00010919.bin
0440f6a9a36ccb71c3f88997583af6bb95bb2038388306ea43b8b1bbed905c3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10919 10904 bytes
font_02_sfnt_off00012e64.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E64 4324 bytes

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