Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a0722557230819…

MALICIOUS

PDF

78.3 KB Created: 2021-03-23 15:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ba634c896666b799816cc9c66f5f9e67 SHA-1: 8bc9f2b6021de82bb833d75b27312a74c3132d77 SHA-256: 80a072255723081989d0b981104d03ad27a5ebd6aacf113816f604586c151976
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. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/wix?keyword=counting+crossing+over+worksheet PDF link annotation
    • http://ru-order-687646765445.art/book_a_table_guide_michelinp6f39.pdfIn PDF document text
    • http://fruit-citrus.space/brother_hl-2170w_error_light883s7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500674/normal_5ff2c0f7141fb.pdfIn PDF document text
    • http://ighelpcenter.xyz/nemor2jayq.pdfIn PDF document text
    • http://ver-alex.website/mimpi_hamil_itu_artinya_apaxjt3c.pdfIn PDF document text
    • https://wezenazuzive.weebly.com/uploads/1/3/4/7/134764498/zunizovuzofo.pdfIn PDF document text
    • http://reduslim-italiaufficiale.site/69933663367ex9j7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480904/normal_6030316393ef6.pdfIn PDF document text
    • https://nixitemolepof.weebly.com/uploads/1/3/4/8/134870129/3033715.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zekubegem.epizy.com/comorbidity_and_guidelines_conflicting_interests.pdfIn PDF document text
    • http://marivugedada.epizy.com/lapuwuzevavusujaziwipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b65ced3-71af-40fc-a998-33e4885f8489/john_the_ripper_brute_force_shadow_file.pdfIn PDF document text
    • http://fefisapuvekebi.epizy.com/fbi_most_wanted_poster_template.pdfIn PDF document text
    • http://suwuwigo.rf.gd/glorious_day_casting_crowns_lyrics.pdfIn PDF document text
    • http://tovebaw.rf.gd/96710131101.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8e7d18b-763a-422d-875e-a52780821e4c/25148319004.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53a5bf70-4cd3-4d1e-bfb0-5c14761e92be/weber_spirit_ii_e-310_gas_grill_natural_gas.pdfIn PDF document text
    • http://xetitonaj.rf.gd/54748933737.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_off0000f468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF468 4940 bytes
SHA-256: 61947f30a40788e7dde385f5cc224ea399c32093f4f1fd07d6530b272a06a694
font_01_sfnt_off0001054e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054E 11484 bytes
SHA-256: 2194b881492bc7a1d53c3e63120a720487605790206fe20608676b353fc804ca

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