Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9170dd69291f0d5…

MALICIOUS

PDF

69.3 KB Created: 2020-11-11 16:52:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a600529490cbfcf70ef3b5a592ec39b6 SHA-1: dbae578347be813d00c1ab2de286bf09709172ee SHA-256: e9170dd69291f0d5d9d613ffebe7eb6f71116d1633f0953f71b609ec5d83bd1e
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/strik?utm_term=nallavanukku+nallavan+tamil+full+movie+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450636/normal_5fa56121a143d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f9201d74ba41.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/pixotilab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5faa69a3a9f98.pdfIn PDF document text
    • https://zebatezovas.weebly.com/uploads/1/3/4/6/134618099/85700ac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f907db2a949a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_5f9085a01c923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394077/normal_5f9151888f0a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f8c6ff74db2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477638/normal_5fa8567e89c4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5f9e3ed16bd24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382430/normal_5f92517834985.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410194/normal_5f9459db7a0b0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2680ccb2-f269-4603-8c5d-8a3a9d2c7cc4/kufizorofexukexuxufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb8e3c5e-5baa-4251-8c25-5196004b9033/tikiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/saint_ansgar_school_calendar.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_off0000d339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD339 4964 bytes
SHA-256: 5454294c44af71efa6895e2fead89c8196c8afe7bcc19c2363dd9310ebb200d2
font_01_sfnt_off0000e42d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42D 10496 bytes
SHA-256: 5293ff29f6b94e5404c20dc08f99de781ff3faa35305cd1686c308ea9348dd80

Open this report in the interactive analyzer, or submit your own file for analysis.