Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bada23c731a4296…

MALICIOUS

PDF

85.1 KB Created: 2021-04-11 22:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0057630f20b0e5e690016f9155bfeaee SHA-1: cfc025861238b9be86f7443852d615518078463e SHA-256: 4bada23c731a429654004f233664f5424773cfde2da747c1d066e40cfbafe6ba
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and numerous other URLs point to suspicious domains, suggesting the document is designed to redirect users to potentially harmful content or phishing sites. Although no scripts were explicitly extracted, the PDF_URI heuristic indicates an external URI was embedded, likely for malicious redirection.

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://leonvi.ru/strik?utm_term=how+to+overcome+ocd+on+your+own
    • http://my-favshopf.online/what_is_narrative_timeo4gl0.pdf
    • http://cafe-cok.ru/harbor_freight_predator_9000_generator_manualybq5s.pdf
    • http://gonifarej.mywebcommunity.org/2020_porsche_cayman_owners_manual.pdf
    • https://cdn-cms.f-static.net/uploads/4489988/normal_605a5d22b418c.pdf
    • https://cdn-cms.f-static.net/uploads/4416321/normal_605a2848cffaa.pdf
    • http://agencymedia-ig.com/92103061858jmy7f.pdf
    • https://static.s123-cdn-static.com/uploads/4418984/normal_5ffd9d6f6698e.pdf
    • http://vizexibidoxi.getenjoyment.net/muveduge.pdf
    • http://servempieza.site/bhagavata_purana_6.16.37qlxa0.pdf
    • http://voicebftyi.com/waloferapegolesurajisujotebbwl.pdf
    • http://lastasked.com/beauty_plus_old_version_2016kfgkh.pdf
    • https://cdn-cms.f-static.net/uploads/4379851/normal_6061584adef45.pdf
    • https://cdn-cms.f-static.net/uploads/4464070/normal_601b142cdf935.pdf
    • http://jajuviramigawo.medianewsonline.com/40101261318.pdf
    • http://itfamily.pro/inversor_yaskawa_j1000_manual_portugues2p4yu.pdf
    • http://igme.site/76447176990crdsj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/bajuse/pull_up_banner_template_powerpoint.pdf
    • https://s3.amazonaws.com/tugabijenovili/tamil_az_hd_movies_free.pdf
    • https://s3.amazonaws.com/wutisigila/expense_sheet_template.pdf
    • https://s3.amazonaws.com/zolerazowubow/albizia_lebbeck.pdf
    • https://s3.amazonaws.com/norozovijalu/69728987078.pdf
    • https://s3.amazonaws.com/gowebabuxogiro/foods_to_avoid_for_gallbladder_inflammation.pdf
    • https://s3.amazonaws.com/xutomoxu/vagiduzoviwefidifu.pdf
    • https://s3.amazonaws.com/gusule/sidogisoxipowojasepo.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_off000103ed.bin
aad405cd5e31e7d70dd7dad50bbf35e5c6470024d6f26d04051f034aa6572348		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103ED 4712 bytes
font_01_sfnt_off000113e9.bin
a6e3a2e0c0ed57ef9ad13ae447990ba23f01ba4a5d966f8b439451f76499dc2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113E9 10748 bytes
font_02_sfnt_off0001389e.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1389E 4324 bytes

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