Malicious PDF — malware analysis report

Static analysis result for SHA-256 960f285a297d382d…

MALICIOUS

PDF

87.5 KB Created: 2021-03-28 11:32:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78c8e37e8239b22adb8b25d6437d9966 SHA-1: b89c155eca24c5232474be113af3f348db6144c8 SHA-256: 960f285a297d382d1d7166b91247ef20a3ca4ba9fea7809f97015dd687064733
104 Risk Score

Malware Insights

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

The file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high probability of malicious intent. The presence of external URIs and a visual download button suggests a phishing or social engineering attack aimed at tricking the user into downloading a payload. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a downloader or phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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://jacksth.ru/award?keyword=athlean+xero+pdf+free
    • https://pitalozel.weebly.com/uploads/1/3/1/3/131384414/5526895.pdf
    • https://cdn-cms.f-static.net/uploads/4403404/normal_601a884ce1e90.pdf
    • https://wisetigu.weebly.com/uploads/1/3/4/3/134357320/nexuf.pdf
    • https://static.s123-cdn-static.com/uploads/4446638/normal_600401bb36456.pdf
    • https://static.s123-cdn-static.com/uploads/4425227/normal_5fcb57cd70269.pdf
    • https://kibodowusi.weebly.com/uploads/1/3/4/5/134588916/nuwovudi.pdf
    • https://static.s123-cdn-static.com/uploads/4412183/normal_5fed434c29f43.pdf
    • https://wavadubo.weebly.com/uploads/1/3/0/7/130775728/ziwigubago-dategiwil-rovabirodikebu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://167c2301-eccc-4e3a-a609-38a4f17b9bf8.filesusr.com/ugd/b1dabf_05946030d6f44788a50c80955bf81cd3.pdf?index=true
    • http://telewazikenap.rf.gd/56147658996.pdf
    • http://nadowitumo.rf.gd/40556588693.pdf
    • http://jelazib.epizy.com/35824904309.pdf
    • http://junimufik.epizy.com/cules_son_los_animales_que_estn_en_peligro_de_extincin_en_honduras.pdf
    • http://xedaripa.epizy.com/pexen.pdf
    • http://nivawuxiki.rf.gd/asset_allocation_form_for_employees.pdf
    • https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_afb82c72441e46afa58298691e5a66dc.pdf?index=true
    • http://butenoze.epizy.com/nesuxoxekebaguzinek.pdf
    • http://sogefotatuledis.epizy.com/84859782727.pdf
    • http://bidejepeko.onlinewebshop.net/givezaxet.pdf
    • http://zusewijoje.epizy.com/55833790751.pdf
    • http://tuladupanekeziv.epizy.com/63835263770.pdf
    • http://romepasuv.myartsonline.com/union_budget_speech_2020_19.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_off0000f6ba.bin
4253ce374f546ed82c0b962bfad5e193173c5af7311640f7068ccdda2cb38311		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BA 2960 bytes
font_01_sfnt_off0001013b.bin
c35f6cdbf9a5c1dd434815854dca6f847d7848a972e74ecd0b3ed2d3624b7ada		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1013B 5008 bytes
font_02_sfnt_off00011243.bin
3d0b1ab59087773b66b18eecb276cfd538e7ddb87eb60de952e3175f7d217b9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11243 11692 bytes
font_03_sfnt_off00013951.bin
6049f7be1eb58524b2bfe5e0ab34f4300347f26dbb23ab6ad605e3b0d5647553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13951 16084 bytes

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