Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb2b8c1e92add53…

MALICIOUS

PDF

82.6 KB Created: 2021-03-17 23:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d11a158f0b380cb7fdbabb9b78c39f85 SHA-1: 9caafffc57a9773c71e9b1555a2ecc9806a03831 SHA-256: 6fb2b8c1e92add53467e96a70f26d02050618b98f43f8b91166b1eefcfc64104
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://zajinet.ru/award?keyword=creative+thinking+free+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387054/normal_6043f4087ccd4.pdfIn PDF document text
    • http://getveran.site/what_is_the_coldest_city_in_the_world_right_nowac3xd.pdfIn PDF document text
    • http://trixy-matrix.space/874210327363006g.pdfIn PDF document text
    • http://jusapp.club/menovojonuvafumevutibabnbfu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382193/normal_603a5a46a671e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455380/normal_601272a6700e2.pdfIn PDF document text
    • http://lisuzigerob.mygamesonline.org/the_good_morrow_poem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/dorenadeses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e2a1e79-608f-4eab-bc8c-00fe1e02ec90/40995017749.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/spectre_performance_cold_air_intake_systems_review.pdfIn PDF document text
    • https://c827806f-f9bf-4fd3-a4ce-e487c020fa79.filesusr.com/ugd/6fd45c_1f2594ff7e3b4e34ab0cd15f9d692ef1.pdf?index=trueIn PDF document text
    • http://gapoxuvopa.onlinewebshop.net/what_does_the_end_of_the_handmaids_tale_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/biology_book_form_3.pdfIn PDF document text
    • https://1864c106-1a4f-4194-99fb-dabd5a0af450.filesusr.com/ugd/17b194_56b4082add9b4483b1e966bd7dff9aaf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/which_bank_has_the_best_home_equity_loan_rates.pdfIn PDF document text
    • http://duvodix.myartsonline.com/jebigidutenorinawamimal.pdfIn PDF document text
    • https://7b806e58-2e0f-4c22-b5e1-e0f71c4d6e86.filesusr.com/ugd/8da65f_7bd80fc97bf845e4a47d9c60721965bd.pdf?index=trueIn PDF document text
    • http://gipebevu.atwebpages.com/90476558597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0538951-ac2a-4b16-ad2e-3442dd57d628/9154130532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ced277-a612-4b8b-8b18-6943bc3f4794/how_much_coffee_to_use_in_keurig_reusable_filter.pdfIn PDF document text
    • https://391e4f24-9fc9-4707-ac06-338edcd9f959.filesusr.com/ugd/110ef3_883113ee8769494d990db84f25463871.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/gitlab_artifacts_python.pdfIn PDF document text
    • http://pasifowon.atwebpages.com/easy_coordinate_graphing.pdfIn PDF document text
    • https://d1897088-ef6e-4b60-8303-910b4b551fc1.filesusr.com/ugd/4cfbbd_d100cc5e36ff4f9196c0a2974a58b281.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10400 5248 bytes
SHA-256: da6ae4ffcc133b950c95776af582f57d72fb75df62f75de2f326b3372eff5a4d
font_01_sfnt_off000115ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115ED 10988 bytes
SHA-256: 54cc795c39a9afc3c74467fb3604249517932d61994f3d01020ab6f0f6f84c69

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