Malicious PDF — malware analysis report

Static analysis result for SHA-256 221462b5bb3323a1…

MALICIOUS

PDF

75.7 KB Created: 2021-04-21 16:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5f3a9f521127663b5ca3d5276797653c SHA-1: 72a2f003cba9c04e255ee0836e5824b226f9d9bd SHA-256: 221462b5bb3323a1c647fe888ac8fe743ce83a15b6330114c35295eb1368a70d
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 0.9999

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://xezojetit.ru/strik?utm_term=tales+from+the+loop+episode+one+cast PDF link annotation
    • http://kaxunatinoti.iblogger.org/86194228594.pdfIn PDF document text
    • http://momuloteseze.22web.org/the_story_of_our_lady_of_guadalupe_and_juan_diego.pdfIn PDF document text
    • http://gazupoz.sportsontheweb.net/yksek_gerilim_teknii_birsen_yaynevi.pdfIn PDF document text
    • http://sagunutu.medianewsonline.com/technical_drawing_lettering.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486199/normal_5fe90a47b9173.pdfIn PDF document text
    • http://rozewevojalel.sportsontheweb.net/bespoke_software.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415767/normal_600280427b142.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445881/normal_6005198123a96.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sidabimesalib.epizy.com/addition_practice_sheets_for_kindergarten.pdfIn PDF document text
    • http://vagakidid.epizy.com/project_report_on_capital_structure_of_a_company.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0caaff05-3c60-42e5-8aa8-c6a4f449b475/96078077501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4e9d6d6-c826-4315-b0bf-946bee7167fa/what_are_the_symptoms_of_a_malfunctioning_pituitary_gland_tumor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad6f4b00-0970-42dc-a324-a7bf1f01baa9/what_oil_does_a_ford_ranger_3.2_take.pdfIn PDF document text
    • http://nowuzapifara.rf.gd/50468449118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b37d4c2-a214-44fa-80a6-001fd94a6c87/pigim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a620265f-e694-43c8-ad88-9388cb2721c5/unequal_childhoods_chapter_3_summary.pdfIn PDF document text
    • http://nerusejide.rf.gd/gudexakogebezujanumoveji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ef30f8d-1e78-4764-a741-ef9e7c1245ba/63741032353.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_off0000eb54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB54 5344 bytes
SHA-256: 631830b763bd184430c6eec6aa6fcebc62241a1868dee2879fcec3ee9bc3df4d
font_01_sfnt_off0000fd56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD56 10844 bytes
SHA-256: 98b576a6a5b54106d65696c66526c40464cf0f3429c7288edc13d3ae367b8e75

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