Malicious PDF — malware analysis report

Static analysis result for SHA-256 6beb9903c42a5bfb…

MALICIOUS

PDF

78.5 KB Created: 2020-11-13 09:02:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 78ac56fb1c2c3e3b78a6ce37e2674056 SHA-1: da9e6ff9f5628e7a8f621707fd082780488b927e SHA-256: 6beb9903c42a5bfb4aae57c98f3ca5bc2b7bf254d6ebb800d3badeaf134f49e5
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 0.9996

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://traffine.ru/strik?utm_term=exotic+massage+new+york PDF link annotation
    • https://morurotefat.weebly.com/uploads/1/3/4/3/134317018/228899.pdfIn PDF document text
    • https://walinakonefal.weebly.com/uploads/1/3/4/3/134316097/fb99dd7214a.pdfIn PDF document text
    • https://biduvokiket.weebly.com/uploads/1/3/4/3/134367510/2186457c2840a3.pdfIn PDF document text
    • https://gemegomuzek.weebly.com/uploads/1/3/4/3/134339500/labaninaze.pdfIn PDF document text
    • https://vukibawurop.weebly.com/uploads/1/3/4/6/134601902/volesiwotelerateziwo.pdfIn PDF document text
    • https://gabozagabu.weebly.com/uploads/1/3/4/5/134506959/bogida.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/vikopajipi.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/3670096.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/felasorarabipis/penoxaf.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/fizofugofiberemej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fd0cfd8-4558-4c05-9636-739774e2b0a3/70714964940.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/kasam_tere_pyar_ki_episode_20.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc76244b-b65e-47e8-96c5-6324e6f96dfc/veniduzekibililu.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/16349778453.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD104 5372 bytes
SHA-256: 5b3de5ea70668ec05774ce88c7457825296501fef740d0faa33692cf4f11b46a
font_01_sfnt_off0000e349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE349 3652 bytes
SHA-256: 9f07f50ad31ee156bf73d19d0ebee80786f17e243ab45966e55ce74746d43d0f
font_02_sfnt_off0000f183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF183 10452 bytes
SHA-256: 1cf0c1808240a27ca21fdf8ad4e89fb2d2e3b1b73d745fdd2005e4a225799b47
font_03_sfnt_off00011598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11598 16616 bytes
SHA-256: 7ab81ce3d92a9ec80982bbbf7df4378fdf9290867a146be245f32411f9d17586

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