Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0be43c5dc2f8c5…

MALICIOUS

PDF

66.7 KB Created: 2021-03-17 02:50:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0e4df3d6cdb0d82d5a4b9a0ba994b8c4 SHA-1: 526ebf62f3099f209f9f5d60887069e7aad4e313 SHA-256: ae0be43c5dc2f8c5b5483f76567134eb34a1527af9d63f06327f1211e4317374
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://kuzutuzo.ru/strik?utm_term=is+tesla+the+first+electric+car PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448116/normal_5fcbed62e65a2.pdfIn PDF document text
    • http://javoreruja.iblogger.org/what_are_basic_carpentry_tools.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423714/normal_6006e1b753efb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366005/normal_5feb5bbe21d64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402504/normal_5fe914e1a477e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495696/normal_6040ea80ec75c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383136/normal_5fe4622162fdf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409238/normal_6001d5c85d756.pdfIn PDF document text
    • http://kurelifiw.22web.org/aloud_or_allowed_worksheets.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368747/normal_6007d0c4ad0ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0cfe495c-9a5f-46a1-a5f3-fb21b6211bac.filesusr.com/ugd/7aabb2_6518de7b29744bd5a177c5097b5ec137.pdf?index=trueIn PDF document text
    • https://88966db1-4a83-4446-b941-f65022a6235f.filesusr.com/ugd/928e0f_39dda9cb520e4cc6aee13b65c0f37b3c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/huckleberry_finn_summary_chapter_12-14.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/manila_kingpin_the_asiong_salonga_story.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/canada_protection_plan_beneficiary_change_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/logo_quiz_game_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/libetevedusitekevu.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/android_autocompletetextview_text_change_listener.pdfIn PDF document text
    • https://e6f9d1db-9bad-45ba-a188-0e8e378e8087.filesusr.com/ugd/99b222_d920e4f24bfd4e769b9ae00bb6463866.pdf?index=trueIn PDF document text
    • http://bepibuxel.epizy.com/6490540295.pdfIn PDF document text
    • http://kagadagofos.epizy.com/artemis_fowl_trailer_ita_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/wafugiseradizipasijuj.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_off0000cb7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB7F 4904 bytes
SHA-256: 3f6d4ad8d035f6ab5ec32f7d5dbf9efb72abbe0793f733f48328c574d6d9d344
font_01_sfnt_off0000dc23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC23 9756 bytes
SHA-256: e0d9c3cbd9733e48e651f667c64b8c8088ad5a90f4f45d0a27e6fbdc373535c2

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