Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c28d1f9f11f78c…

MALICIOUS

PDF

75.5 KB Created: 2021-03-05 20:04:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4c22874c5fda5f391b7c1be81613a684 SHA-1: 3c93547d0d8522a387888c8604a3d70966da47b6 SHA-256: 60c28d1f9f11f78c8e3e0139018432edcaf32f7da99c8721fe49807608dc755b
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 0.9996

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 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://kuzutuzo.ru/strik?utm_term=how+many+pounds+can+i+lose+in+11+days PDF link annotation
    • http://xupazekawinan.iblogger.org/94855596490.pdfIn PDF document text
    • http://zokixofevuku.22web.org/website_template_coding_tutorial.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zalowakudedakov.rf.gd/noughts_and_crosses_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/golofupa.pdfIn PDF document text
    • https://aed022ca-8a9d-452d-9022-56a74a585a14.filesusr.com/ugd/4d548e_9061d8b2f19a4a72a5ab86bc605d65fb.pdf?index=trueIn PDF document text
    • http://jolasesiv.epizy.com/xavunabisexerozekalawate.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/41600929566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fbbac56-ebf7-4cc6-8481-1bccc243eebf/spirit_blossom_ahri_skin_price.pdfIn PDF document text
    • http://nagajawonusagu.epizy.com/vobejoremelov.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/how_to_fix_a_leaky_delta_shower_faucet_single_handle.pdfIn PDF document text
    • http://ximowuve.epizy.com/microbiology_lab_exam_question_and_answers.pdfIn PDF document text
    • https://3c3b6f52-20a2-448a-be11-eec5930c502f.filesusr.com/ugd/0ca786_9a94bd83f6194dcfb91f62ff0af07953.pdf?index=trueIn PDF document text
    • http://wukefomirufiza.rf.gd/65705995667.pdfIn PDF document text
    • http://ruzuzis.rf.gd/best_meditation_apps_android_2019.pdfIn PDF document text
    • http://ponowuvibux.epizy.com/mevalu.pdfIn PDF document text
    • http://vitegunarigiri.epizy.com/37808688584.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b66af8bd-205d-474d-89f8-fee31927e1d5/montgomery_ward_sewing_machine_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcebe243-b27b-42d6-9652-346d71f971f6/tadowup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45c1c672-631f-4896-a957-0ea943bf7c4c/pretty_little_liars_the_perfectionists_cancelled_why.pdfIn PDF document text
    • http://risutunuf.epizy.com/lerepasakunikikobavul.pdfIn PDF document text
    • http://gusojabij.epizy.com/100_dollar_startup_book_price.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_off0000ea53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA53 5332 bytes
SHA-256: cc32e2a8e3f98496493e88f96ea240cb7097f29928abf640ead3077a3850fd24
font_01_sfnt_off0000fc7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7E 10472 bytes
SHA-256: c120e68fa13439d91d6b9f56fe511825c351a3ce903856c43e110221a79781c9

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