Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bebf611b3ca1cb1…

MALICIOUS

PDF

314.9 KB Created: 2021-05-26 20:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b8e7692464238920081ce789e20c6d6 SHA-1: d9457fad71cd374d1968ae26d93d6ee940fbba48 SHA-256: 3bebf611b3ca1cb16481195f19a425514078179a431fdb4bf2c2dd76f90ccbe9
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains heuristics indicating it is malicious, including ML classification and ClamAV detection. It presents a fake download button and password protection instructions, suggesting a lure to download a payload. The embedded URL points to a suspicious domain, likely serving the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7714

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kuzutuzo.ru/strik?utm_term=asphalt+8+pc+cheat+engine+windows+10
    • https://fugazuxelodurip.weebly.com/uploads/1/3/4/6/134639195/355611.pdf
    • https://cdn-cms.f-static.net/uploads/4379987/normal_5fe8100715f92.pdf
    • https://babapijolirex.weebly.com/uploads/1/3/1/4/131409508/608162.pdf
    • https://libosimi.weebly.com/uploads/1/3/4/0/134000241/rimibibu.pdf
    • https://fumunavizagoz.weebly.com/uploads/1/3/4/2/134235019/3376102.pdf
    • https://lafowujokunoro.weebly.com/uploads/1/3/0/7/130738997/7114701.pdf
    • https://jewumuseporefi.weebly.com/uploads/1/3/4/5/134599703/3021973.pdf
    • https://sexozorojupur.weebly.com/uploads/1/3/4/3/134390270/sakururebilozorod.pdf
    • https://nebofubegifeso.weebly.com/uploads/1/3/1/4/131437549/sodevuvolegu.pdf
    • https://dewixazupeteti.weebly.com/uploads/1/3/1/4/131455636/ea86343.pdf
    • https://ximabetewu.weebly.com/uploads/1/3/1/3/131384229/tonozab-mitok.pdf
    • https://rerevuvin.weebly.com/uploads/1/3/4/5/134524399/40eb8a.pdf
    • https://zojufagilazit.weebly.com/uploads/1/3/0/9/130969654/57ec87210cbd.pdf
    • https://fiwibafufo.weebly.com/uploads/1/3/0/7/130774969/2423512.pdf
    • https://cdn-cms.f-static.net/uploads/4445877/normal_602569dddd39e.pdf
    • https://nikokitigo.weebly.com/uploads/1/3/4/5/134500207/pexosedaxemafogi.pdf
    • https://tivubikujadilav.weebly.com/uploads/1/3/4/5/134527100/5f7114626f3.pdf
    • https://nidupivulef.weebly.com/uploads/1/3/4/0/134042353/pebesegaru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/64ec82d5-0bba-4fcb-a2ef-b8efae371093/37254249437.pdf
    • https://uploads.strikinglycdn.com/files/3fc1bc4b-8e22-4c1f-9025-8fca8ea10dd2/65960758942.pdf
    • https://uploads.strikinglycdn.com/files/f58da49e-b3e1-4991-94a9-628f153dc2b9/7097464737.pdf
    • https://uploads.strikinglycdn.com/files/b578670b-c8e9-4c45-b479-36b321912658/american_indian_history_a_documentary_reader.pdf
    • https://uploads.strikinglycdn.com/files/a3da1cd9-edac-4b90-b69e-d2367b0db94e/newupixudovalaz.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
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004543b.bin
2f32373152b86590eb5c993bf8dbb57d20fc33770b92bc1ec6b5fd985d660553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4543B 2828 bytes
font_01_sfnt_off00045e44.bin
a2aa61d72233136775ca47083e9d407734ca1c70609b320c09101e5dfa9524eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45E44 5708 bytes
font_02_sfnt_off0004718d.bin
9af47a0553209b70096a984e313373b16f9274db3f023676752fa17de4cbf467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4718D 6212 bytes
font_03_sfnt_off00048093.bin
285289b5783a7dfb01a66b3480124ec153f2202136bd91baba120d8da67b4f80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48093 4296 bytes
font_04_sfnt_off000490f6.bin
7ca9ab45e503e8543e1767a5fcbd73bf17771359309bdc6b92876ba571963de7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x490F6 18100 bytes
font_05_sfnt_off0004c45f.bin
35b759159d4ff784779daec5d79f16172c475ea1dc77e81a3f1675856aaccb81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C45F 16388 bytes

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