Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be52615b9cbdfbe…

MALICIOUS

PDF

88.7 KB Created: 2020-11-20 13:36:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 61796e89236ae09c032288473d4e96a9 SHA-1: 2a4528505fab99158449e4c15ed585197444f865 SHA-256: 0be52615b9cbdfbe5cf40fb5e049dfaa97bd131aa25fd746908fd313c6af14ef
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 0.9997

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://traffking.ru/123?utm_term=titanic+musical+score PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383922/normal_5f8fe840c4f5e.pdfIn PDF document text
    • https://pekubitox.weebly.com/uploads/1/3/4/4/134477952/a6e9ef207de1.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/zagubip/the_hunger_games_falling_action.pdfIn PDF document text
    • https://s3.amazonaws.com/takeju/2195728578.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a516267-67ec-4240-865e-4bea561188a7/86413200453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/812a0d3f-184c-4535-8ca8-649b0efd1369/vasevowajosikesarijipav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df032e5f-8f29-4d05-b549-8928ca5891e5/81168599728.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/limukadirifonupaja.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/walnut_creek_middle_school_ca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c78aec61-dc06-4ffb-9495-89cf1541e1c4/imek_mekkuin_izgi_film_izle.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/maltese_falcon_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c1a520a-2be5-4799-aae2-db84c7d2f982/nuvipetokigusapekujufuw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAC 4432 bytes
SHA-256: 785b2d3c2583f49c409255460c398223eb79c28a70011c9a3a5baaaa70c6ccae
font_01_sfnt_off00011a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A22 4896 bytes
SHA-256: 1dcd570f724f1be0a4554a75e4f138ae2a82a1dcd76a8322368d983fac8fdb70
font_02_sfnt_off00012aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAC 14168 bytes
SHA-256: b4c5ac7fe134de3ceabb7864fe8bfb92ef2cafd2bcb60f6214301111d1d84fab

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