Malicious PDF — malware analysis report

Static analysis result for SHA-256 064c4288c43dbc49…

MALICIOUS

PDF

70.1 KB Created: 2021-03-20 08:49:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6b201efa0059c5923bb63dc7c972e969 SHA-1: 1f09e211bbcf3c27d632c63a3bad3fd67d24ca8b SHA-256: 064c4288c43dbc49696640019fc18092aada01440ba20f88a044f33a164acc1a
166 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 a password-protected-archive 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 0.9996

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=moon+phases+worksheet PDF link annotation
    • http://springtea.space/muzivoporopivakeguwvy4c1.pdfIn PDF document text
    • http://best-ital.fun/aqeedah_tahawiyyahl823v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408976/normal_603868fa00ade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484370/normal_603a24709e59b.pdfIn PDF document text
    • http://businesshelpservice.com/zemonjz09t.pdfIn PDF document text
    • http://nenegifivujaxu.mypressonline.com/rirodejebolefe.pdfIn PDF document text
    • http://miwuzobi.sportsontheweb.net/sadeg.pdfIn PDF document text
    • http://xuzobinemipivor.mygamesonline.org/pegagonid.pdfIn PDF document text
    • http://organic-ita.space/apps_whatsapp_2018d2kfo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460243/normal_60421e743fe97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_602a08f602bdc.pdfIn PDF document text
    • http://vobafoselalulor.mypressonline.com/familia_cephalotaxaceae.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/bifupikab.pdfIn PDF document text
    • http://terugate.mypressonline.com/articulaciones_cartilaginosas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455901/normal_6055716d58dcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427093/normal_6043ea370b19e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454678/normal_5ff226a4570fa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kadizilurojiniz.onlinewebshop.net/tp_link_wr841n_username_and_password.pdfIn PDF document text
    • http://vexolofifete.atwebpages.com/what_are_the_disadvantages_of_public_relations.pdfIn PDF document text
    • http://robefowoved.onlinewebshop.net/christmas_piano_sheet_music_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c8da524-60d7-47c3-9414-f292b0b10d11/12810760991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8d90083-3f64-48bb-ac11-3e9f69c5067e/niwosamuwituronetojizin.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_off0000d597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD597 5036 bytes
SHA-256: 18d92a872de6ac8959deb963b83853659b87f0cc53552da698ae59a2c0ea297b
font_01_sfnt_off0000e6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C9 10764 bytes
SHA-256: 140a9a8edf85253e775441ba9dd7f10cb84a4afab983af1e4cd8dc4f45d00f88

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