Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d14fc68d2010b6…

MALICIOUS

PDF

81.1 KB Created: 2021-03-01 07:29:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bd7e692c4ba82760c1f836e272cd8d1e SHA-1: 50709659aa9f38749909de338e9c3d01445b7084 SHA-256: 96d14fc68d2010b68d3aa42c036b64e56c43cafc75f31e6e827f6a3504c8a746
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/aws?utm_term=m-audio+keystation+49+mk3+size PDF link annotation
    • https://mekufaro.weebly.com/uploads/1/3/5/2/135294947/841ab.pdfIn PDF document text
    • https://nutiniwe.weebly.com/uploads/1/3/4/8/134870290/jasupij_zinomixegomanes_wawar_dinaxijijovifu.pdfIn PDF document text
    • https://povefedonigo.weebly.com/uploads/1/3/1/6/131637150/lologekivap.pdfIn PDF document text
    • https://faneboluti.weebly.com/uploads/1/3/4/4/134464249/b489c6cc18bdfd.pdfIn PDF document text
    • http://vemusopudin.22web.org/solaredge_storedge_inverter_spec_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/togodawexu/gdpiiYZ/animal_ringtones_mp3_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489245/normal_5fddac9a919e8.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/71f5fe855ca5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389084/normal_5ffa57202167d.pdfIn PDF document text
    • https://cdn.sqhk.co/wezokobuli/98jhxid/torn_labrum_recovery_time.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418590/normal_5ff26e4c02d34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367645/normal_5fee0cfa02f39.pdfIn PDF document text
    • https://senemoribut.weebly.com/uploads/1/3/4/7/134703027/zewuvagopumeje-buxonosujokokev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413223/normal_6022c9a19786d.pdfIn PDF document text
    • https://barezixajeg.weebly.com/uploads/1/3/4/3/134318527/tokugodafog-fowamuji.pdfIn PDF document text
    • https://jevamupoledi.weebly.com/uploads/1/3/4/7/134712268/5476503.pdfIn PDF document text
    • https://cdn.sqhk.co/pemiduwegam/hdgj5QL/download_zombie_3d_gun_shooter_mod_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/cjbicjg/funny_barrel_racing_jokes.pdfIn PDF document text
    • http://gejopuzebizovuk.iblogger.org/housing_development_board_annual_report.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419626/normal_60086d89e3c03.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000fab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB8 5504 bytes
SHA-256: aeebe2e3cf9c1c0fe68dda19902b785a15b05d168030d7c3c6ea80723caedff9
font_01_sfnt_off00010d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D96 11744 bytes
SHA-256: 12188ce2b6320b50f43c30ee699177c91b7254711eb9d9a123740788d26f7763

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