Malicious PDF — malware analysis report

Static analysis result for SHA-256 080c631cdff3c101…

MALICIOUS

PDF

80.4 KB Created: 2021-03-03 08:59:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b45735525087c02cc46337f5d66db8d7 SHA-1: a35de8fabe9f9b66ec56d9db0a8477b128e39016 SHA-256: 080c631cdff3c101b2ace913002d9c4b72a384e1794abcc1e543ef35e6d3eb09
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/strik?utm_term=ruger+lcp+2+owb+paddle+holster PDF link annotation
    • http://xifelaseb.22web.org/internship_report_sample_for_mba.pdfIn PDF document text
    • http://nebibila.iblogger.org/high_voltage_transformer_design.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446017/normal_5fd72b3d3c625.pdfIn PDF document text
    • https://wemupubipu.weebly.com/uploads/1/3/5/3/135331653/mipapoxavemi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418557/normal_5fd1b65028a10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5fe0f265cd754.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444852/normal_603efcc1e310e.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
    • http://puredaw.rf.gd/80861528177.pdfIn PDF document text
    • http://jilabof.epizy.com/funny_answering_machine_message.pdfIn PDF document text
    • http://gaxapokone.epizy.com/vowabozon.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/the_5_dysfunctions_of_a_team_lencioni.pdfIn PDF document text
    • http://nujafosedoke.epizy.com/tang_soo_do_bo_staff_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/what_does_memory_mean_in_psychology.pdfIn PDF document text
    • http://sulegezusaz.epizy.com/fsa_algebra_1_eoc_review_packet_answers_with_work.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/fema_is_454_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/2008_chrysler_pt_cruiser_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/93952543241.pdfIn PDF document text
    • http://sogigadataga.epizy.com/antivirus_for_hp_laptop_free.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/57894795820.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_off0000eebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBF 5432 bytes
SHA-256: 3371b7c9aaf06f7c5374a2ec23d977c9eb56631c343fe3e476fc771b93503e72
font_01_sfnt_off0001015d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015D 10672 bytes
SHA-256: 54fb3cd506ecc9ce88c9e9ff96e0a8bdb7dc2cd15cb2f7d098464cecabfc2327
font_02_sfnt_off00012605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12605 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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