Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde82c45ae31a14b…

MALICIOUS

PDF

79.7 KB Created: 2021-03-18 00:42:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6a8273dac1340ab03a2f1e3fd9a1c900 SHA-1: c323be04d92d16a71c48db270374b55f19e401a2 SHA-256: cde82c45ae31a14bd53b2718c760610a3caca7c702183dd20a75a65e7c4c1725
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://bologen.ru/wix?keyword=kyocera+duraxv+user+manual PDF link annotation
    • http://surupumigo.mypressonline.com/bosch_automotive_aftermarket.pdfIn PDF document text
    • http://amsidisi.xyz/doxovigenotopl9j7.pdfIn PDF document text
    • http://sodowetan.mywebcommunity.org/56243902562.pdfIn PDF document text
    • http://italy-small.space/finotalizizsgqeo.pdfIn PDF document text
    • http://xozowilozoga.mywebcommunity.org/singer_sewing_machine_model_4562_instruction_manual.pdfIn PDF document text
    • http://rusewigojubilon.mygamesonline.org/4207623266.pdfIn PDF document text
    • https://piwevowukitibe.weebly.com/uploads/1/3/1/4/131454699/2757287.pdfIn PDF document text
    • https://nekitunanozot.weebly.com/uploads/1/3/5/3/135346928/34935206.pdfIn PDF document text
    • http://temppicture.xyz/th8320u1008_programming_manualaqxv7.pdfIn PDF document text
    • http://my-favshopc.online/princess_second_grade_games7tcph.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/79578280000zkiai.pdfIn PDF document text
    • http://tomandbxof.site/97629318625lfdmz.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/donake/dofolib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/304d6873-18c5-48b1-8861-42fc3989839b/merifupuze.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/60247660022.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/kajuradopa.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/how_much_allowance_for_wife.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/15089440367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65d1f01e-18d1-44a6-a815-250d7163a69f/are_dixie_chopper_mowers_any_good.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

Related samples 8

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_off0000fa1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1E 5284 bytes
SHA-256: 71ed6e26f81ec75d6d999656d55580ed7cf07a7033fdac6971f1f838a9466238
font_01_sfnt_off00010c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C15 10984 bytes
SHA-256: e2881f46bff2b3eae4fc20ee234c6b642c93a880d1f8cf6f5428016db49b6ae6

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