Malicious PDF — malware analysis report

Static analysis result for SHA-256 017521d4ab8a6f53…

MALICIOUS

PDF

78.5 KB Created: 2021-03-24 12:15:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f09a37f52ea8c98eee0a5db1283f196d SHA-1: 564a4bad703de92c700d03bbbf249bf1ffec5787 SHA-256: 017521d4ab8a6f535a395ebe852240ee896a51835233cba56311985e4c0710ce
134 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. It uses an urgency-based lure. 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://resalured.ru/wix?keyword=zc02+pill+price PDF link annotation
    • https://sasasazar.weebly.com/uploads/1/3/1/3/131383954/vagabozara.pdfIn PDF document text
    • http://dovulup.iblogger.org/jabaruxutebujozaj.pdfIn PDF document text
    • https://kaxesudinebeg.weebly.com/uploads/1/3/1/3/131379803/4962192.pdfIn PDF document text
    • http://fipirovivupaf.22web.org/76708285087.pdfIn PDF document text
    • https://tubonizuruzoxuk.weebly.com/uploads/1/3/0/9/130969435/donozob-nomesewupirugom.pdfIn PDF document text
    • http://fodefon.getenjoyment.net/place_of_preposition.pdfIn PDF document text
    • http://ropikapusofune.iblogger.org/nipusiwulapevisimixat.pdfIn PDF document text
    • https://wetolobumusu.weebly.com/uploads/1/3/4/5/134579125/8726883.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tojozojorezew.epizy.com/tuloxosanirolimaniz.pdfIn PDF document text
    • http://xetoxogoxuvem.epizy.com/44479726257.pdfIn PDF document text
    • http://jilagikudi.rf.gd/81064201274.pdfIn PDF document text
    • http://bufixel.rf.gd/65743554593.pdfIn PDF document text
    • http://xuwuxixu.rf.gd/sony_str-dn1050_hdmi_issues.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61814273-f547-41f2-b3cd-eebe3c9d4927/16086880606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaf5bda2-cec0-4add-b33a-a3fc7878bdb8/motorola_verve_buds_100_black.pdfIn PDF document text
    • http://xotaferuju.myartsonline.com/mawimunudunowamopub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45243c9b-c701-49d8-9a37-9934144b44d2/nalewipego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e93e5016-994d-4ba4-86ae-c3ed94141b73/stress_management_questionnaire_for_employees.pdfIn PDF document text
    • http://liwubujuwu.epizy.com/chhota_bheem_kung_fu_dhamaka_link.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_off0000f54e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54E 4772 bytes
SHA-256: 5465e44b90c7aa22551dfc442814b2c3670e19d65222665ec41a6dac2b695d6b
font_01_sfnt_off000105a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A3 11808 bytes
SHA-256: 0d588fe1b9f5bf059904e8aa406a2408da0ed7dc7d67fd0ccc0abbb57a4a793f

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