Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa02e98df41c7806…

MALICIOUS

PDF

72.5 KB Created: 2021-03-24 06:31:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6b054e5b4c0ad8cae806f49b41568c0c SHA-1: 52c1e63f964f4b324b37329e892aa834b8e732fe SHA-256: aa02e98df41c7806a92361a3cf233ed7ebc6a79a728855605d48897eef6e92eb
186 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 0.9998

Heuristics 6

  • 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.
  • 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://pelibifir.ru/123?utm_term=alto%2527+s+lament+sheet+music+pdf PDF link annotation
    • http://idealslimitalia-ufficiale.site/american_military_base_in_stuttgart_germanyu2ddh.pdfIn PDF document text
    • https://vepoxiwoja.weebly.com/uploads/1/3/1/1/131164136/2847517.pdfIn PDF document text
    • http://edaeda.moscow/73335809378rl60h.pdfIn PDF document text
    • http://whitetwo.space/28122780482ywjdg.pdfIn PDF document text
    • https://cdn.sqhk.co/jogujufuza/LnDhbib/podcast_addict_donate_apk_download.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/cc9aa74934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474471/normal_6050197eb0dc5.pdfIn PDF document text
    • http://glasshookahcatering.com/doctor_career_paths_ukn25c6.pdfIn PDF document text
    • https://cdn.sqhk.co/rabovafom/fiitdhf/city_defense_rise_of_kingdoms.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503309/normal_602c7a999ac7e.pdfIn PDF document text
    • http://souve.me/fiputudilofetone4mueo.pdfIn PDF document text
    • https://levunabul.weebly.com/uploads/1/3/1/4/131407164/jajukozovoxase.pdfIn PDF document text
    • http://freedate18.xyz/xavekekixowk208o.pdfIn PDF document text
    • https://lumozumaxovoj.weebly.com/uploads/1/3/5/3/135348549/wimujasa_meluzeso_bevokenoloteji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372740/normal_5ff7a86f6670c.pdfIn PDF document text
    • https://safejabev.weebly.com/uploads/1/3/0/7/130739713/gadebabixuniwux_bobubatet_timidun_datibumiweb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://5ce19dfa-329f-495d-88d1-e1e7834d9072.filesusr.com/ugd/d902bb_8947f0b05aed4f3bab4b0980a87c67e9.pdf?index=trueIn PDF document text
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_c21fa9a8a87640aab40544d91ca012c1.pdf?index=trueIn 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_off0000cf69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF69 5204 bytes
SHA-256: 96b168443dd16e13d8f5dc2951365df2e17da0f0acfc4d4b96b5b5148b418976
font_01_sfnt_off0000e0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F4 10968 bytes
SHA-256: b957616a6f4540a8f5e1d19c935ee65ac3c4f5781cd159f6bf30ae29f21fda6d
font_02_sfnt_off00010670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10670 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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