Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8a12f60a1d5fe2d…

MALICIOUS

PDF

75.1 KB Created: 2021-03-19 12:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 27ea1df5a3e42364d4557ea690f1a2cc SHA-1: 58f6ab3c947bc076141853b4d846185ea6f925cd SHA-256: e8a12f60a1d5fe2d32525e41f80f51901863e60ff7e42efe43c97edf0397a095
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xajibur.ru/wix?keyword=baby+g+gms+watch+manual PDF link annotation
    • https://cdn.sqhk.co/zokosofu/cgiY0ib/best_ebook_reader_app_android.pdfIn PDF document text
    • http://nosatines.mypressonline.com/dumalefiwifakoz.pdfIn PDF document text
    • http://libralab.digital/cen_tech_p37772_batterye9zkw.pdfIn PDF document text
    • https://gupovokezatiku.weebly.com/uploads/1/3/4/8/134878629/4570765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420468/normal_602d8212dba2a.pdfIn PDF document text
    • https://kujunegisim.weebly.com/uploads/1/3/1/3/131380440/1a5da3b2a.pdfIn PDF document text
    • http://sdek-24.cc/7602306795698eo0.pdfIn PDF document text
    • http://edarudost.online/50032843287hfpw3.pdfIn PDF document text
    • https://cdn.sqhk.co/luwagoma/jdjhoji/sim_theme_park_pc_download.pdfIn PDF document text
    • http://zhenskiizhurnal.ru/pimuvelaxutakatesuzuzojsrse9.pdfIn PDF document text
    • https://cdn.sqhk.co/tesinogopano/RSBo2c0/rankin_bass_productions_movies.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495055/normal_5ff0e83e87ab0.pdfIn PDF document text
    • http://faxusigeroles.sportsontheweb.net/tinkle_comic_book_download.pdfIn PDF document text
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/da91d83.pdfIn PDF document text
    • https://jomaredavox.weebly.com/uploads/1/3/2/3/132302995/zokeregape.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/KVxOYjc/44498797586.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/D3idhgW/annuity_payment_calculator.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/caca0857-c846-4a70-b3b3-e7472c254d7c/wukokel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/625c6be8-b953-4b08-b315-871b4b253bd8/kizogulonedaxobewulen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/043623ca-12b4-4952-8b82-bc9822ae6e29/jedotedogimu.pdfIn PDF document text
    • http://bixozebaxikapos.atwebpages.com/26029721453.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_off0000e4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F6 5500 bytes
SHA-256: 3ad95d72d78edd6600f615c74bc90b3f4bd8fdaa9c7c7b054925ae60e636e1fb
font_01_sfnt_off0000f7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A7 11236 bytes
SHA-256: e1e4e61dc757109eb0647920e87e7ed17452aa6058d4c686603f170834946bbd

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