Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b4187857e5e4a3e…

MALICIOUS

PDF

77.7 KB Created: 2021-03-28 12:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8d048d46f9648034336dab7c1ab82d6d SHA-1: 5f20ef0797c828c92623c44a7038104784c88cee SHA-256: 0b4187857e5e4a3ea3bc00acc2a747fac257bce00571899cff82a7a2f82b39e4
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 0.9991

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://ponafet.ru/wix?keyword=funny+gay+guy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459174/normal_605eeea8f3994.pdfIn PDF document text
    • http://joxezorov.mywebcommunity.org/articles_grammar_download.pdfIn PDF document text
    • http://bagesopabiwub.scienceontheweb.net/facial_diagnosis_of_cell_salt_deficiencies_a_users_guide.pdfIn PDF document text
    • http://dobofozepop.mygamesonline.org/29833553930.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450733/normal_6032e0398a9c7.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/lm2575_adj_datasheet.pdfIn PDF document text
    • http://lojuxaga.mywebcommunity.org/76399225667.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/93427552397.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495854/normal_604504b2d167c.pdfIn PDF document text
    • http://xixofafil.medianewsonline.com/bridge_abutment_design.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368218/normal_5ff63810ef60e.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/vabedafozo/laburujotinaziwabusaxumis.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/nenesosamivotoboko.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/jofizige.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/tavolosawu.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/29833397689.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/crossover_behringer_super-_xpro_cx2310_manual.pdfIn PDF document text
    • http://pekafujojef.onlinewebshop.net/every_mans_battle_workshop.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/gegejebemineginulebelin.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/belarus_562_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/874481f2-eff5-4cf7-aea1-52e89dc0a46e/69866215162.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b2fdb56-2a76-4c7e-b68d-9e7f3b9bbdc3/bifepumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff8802c3-732f-41c1-88a1-30d9630d8622/author_ng_books.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/32957668770.pdfIn PDF document text
    • http://sarutufasiko.atwebpages.com/59758988300.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF436 4604 bytes
SHA-256: dfb08b6d9295d07f5a367ab4ea40fab6947b24ddcbcd731090310e5b61315203
font_01_sfnt_off00010406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10406 10888 bytes
SHA-256: be2eb5842ec1b8d7a9fd38fc37ac26d7edd42ce3f45e6a6ae8813d9b4c17e305

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