Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ba0900e1f875be…

MALICIOUS

PDF

85.4 KB Created: 2021-03-19 05:50:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1f64eb516e716187ff7763ef08bbedee SHA-1: 98af3dc7ae5176d9da7edadaaf77f877d5df0f62 SHA-256: d1ba0900e1f875beb872584db937b1ac607954894d829092c096e59dc7cec470
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 0.9998

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://lozipotod.ru/strik?utm_term=v+for+vendetta+comic+book+review PDF link annotation
    • https://kugibunil.weebly.com/uploads/1/3/1/4/131437599/loxezot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387815/normal_60010eb1a4be7.pdfIn PDF document text
    • http://rodina38.ru/crashing_hbo_season_1_episode_1_watch_online1dwor.pdfIn PDF document text
    • http://tirojegexo.iblogger.org/jquery_form_prevent_default_then_submit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451227/normal_6053a3c7787b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476436/normal_6026fbcde2e28.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/how_long_is_ccna_valid0xicx.pdfIn PDF document text
    • http://bowoporoj.iblogger.org/bugokolawexakigater.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384468/normal_601329c393333.pdfIn PDF document text
    • https://ganuzuvotaju.weebly.com/uploads/1/3/5/3/135304652/ed6ce668cd0662.pdfIn PDF document text
    • https://nagugopusoz.weebly.com/uploads/1/3/4/6/134645600/tavarivewazanixetuno.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/f1a4fc1a-8f89-41da-82c3-2c0b91221255/pakorizofupupefubakano.pdfIn PDF document text
    • http://pitupeg.epizy.com/75478938533.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73a0dd99-43bb-49b4-b569-e486a9ba8224/korelubisefisulidoxow.pdfIn PDF document text
    • http://lokokojorivumi.rf.gd/betrayal_cheat_sheet_poe.pdfIn PDF document text
    • http://jovelinejovadu.epizy.com/setewopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50b312ba-d70b-463b-9b47-b41bcad9c81f/duvefokenudoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05e43bf4-0877-4a97-b974-932c29e651c8/xivagal.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97E 5280 bytes
SHA-256: 3797b20bbf177f82f99b9d20737bd25d55626cc078cbdd09fe13e46e033b86f8
font_01_sfnt_off00010b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B7D 10720 bytes
SHA-256: 68fb63fd2530c8f3179168959882d68dac4aff0823a7f2471bac7e7190b595a2
font_02_sfnt_off0001306c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1306C 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939

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