Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7f5077f087f22b6…

MALICIOUS

PDF

282.4 KB Created: 2021-03-30 13:24:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 462a5437893d10f9c1025158f61a2146 SHA-1: 16f213071c9a17d47fb9bd124d2781d37d9d8528 SHA-256: a7f5077f087f22b631e083e20c8162bd58ea2a39174ff1604b3afbfafcf49205
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9914

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/award?keyword=acido+folico+embarazo+dosis+pdf PDF link annotation
    • http://tonevagewalilu.medianewsonline.com/kobuwudexutosimuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449629/normal_5feaff18ecf62.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/40845406676.pdfIn PDF document text
    • http://pokezokebawi.mygamesonline.org/automatic_control_engineering_book.pdfIn PDF document text
    • http://joweponula.mywebcommunity.org/19719335348.pdfIn PDF document text
    • http://jeruxawi.iblogger.org/anatomie_oreille_interne.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390056/normal_6018c8c50caf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492536/normal_5fcff5094c46a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481411/normal_5ff928d8b5e11.pdfIn PDF document text
    • http://wurilozi.scienceontheweb.net/pokovapepavozuguj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a7a05860-7088-4b24-a4b5-9fd653d52b99/microsoft_project_2016_free_download_full_version_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/birkenstock_width_size_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23da6c32-814e-4792-8f64-56ff2a2beb05/79646352711.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/camera_360_graus_panoramica_para_celular_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17dd509a-6edc-41a3-a559-e0d97808adf1/71731626539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8708bb1-19f4-486b-b5b8-a7e9ddffc5b6/starcraft_2_unit_ranks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7f455c0-a4c3-450a-bdfd-454004a407ea/52982889470.pdfIn PDF document text
    • http://defisufinuriwo.rf.gd/eminem_songs_lyrics.pdfIn PDF document text
    • http://wemaxoseni.myartsonline.com/17782846553.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/wizetusip.pdfIn PDF document text
    • http://xizokenimufewom.atwebpages.com/bioplastics_production.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/64912669790.pdfIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00040f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40F71 5080 bytes
SHA-256: ab81613104c11fa615b4f6ef6b521211a32503a5ce6d7b40a849524242a4dc56
font_01_sfnt_off000420a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x420A5 12924 bytes
SHA-256: 998a7c91ee838a6641491e21ed6769ce86ce9d9b35e2bc128078ebe9ff1bef4f
font_02_sfnt_off00044ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44AD4 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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