Malicious PDF — malware analysis report

Static analysis result for SHA-256 82630ea42c483ec5…

MALICIOUS

PDF

68.1 KB Created: 2021-01-08 13:59:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 26346c8281a92eadcaa0ff4db8523bb2 SHA-1: 9ea137ab40dcbfc7f62c56e07b4420748c243f88 SHA-256: 82630ea42c483ec55e1e9793ed1db63ac08489b96a89423fa683277ae222a5e5
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://trafficel.ru/aws?utm_term=kirchhoff%2527+s+voltage+law+lab+report+discussion PDF link annotation
    • https://lijasefevofik.weebly.com/uploads/1/3/4/8/134889997/zoxux.pdfIn PDF document text
    • https://cdn.sqhk.co/jifonakilux/bEgc0ja/50961582085.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393026/normal_5fcd9ac4881a4.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/jjkGric/merge_dragons_cheats_challenge_19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427104/normal_5feff45aafc00.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/tazibabebamep/something_the_beatles_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/lurarukiruketasaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7a29de2-10b7-4049-a63f-d3079995290b/nubodabamobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a19bea1-8534-4bbb-9c8c-12d80256805d/todinibunivepegegoge.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/background_photos_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53590d34-3491-4bd7-8007-a0958a7f2015/thrive_fitness_brendan_brazier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0b6930b-e759-40eb-bb9b-fe861a898fdf/gofebubox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d2be2f-732d-481c-96e9-d4540059f938/kuvedux.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/cardiopulmonary_exercise_stress_test.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/fesadikoralozalitavodit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ee5790d-8561-4be7-bdd4-8b4c61b4f34d/13303872750.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_off0000cbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDD 5712 bytes
SHA-256: 2ee8a8a179c16d80ea5c8dce46fd5736ea6ea728551b68c682c4f048bff60ad0
font_01_sfnt_off0000df6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6C 10496 bytes
SHA-256: 6d4f17fbf6a8967f45dbba9f82fcb82f64062fcc295a656165626cf90810a6f9

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