Malicious PDF — malware analysis report

Static analysis result for SHA-256 daaa0a6555a2aabc…

MALICIOUS

PDF

82.5 KB Created: 2021-03-05 23:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 67ba5339ac450f153a37164fb95e7749 SHA-1: 3b47a85e599f30d67f7f96df0fa4e4bd1e869ff6 SHA-256: daaa0a6555a2aabc22bf114e2f167d5431652ac314ee9be9ae5a4555e4e43cf9
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 0.9954

Heuristics 5

  • 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.
  • 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://xajibur.ru/wix?keyword=cbtl+pods+canada PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451753/normal_603f0e6bbbe3e.pdfIn PDF document text
    • http://imm-shoes2.club/686017114750qfe6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403684/normal_5fe0ce9666a2b.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/b03giMh/startup_business_plan_ppt_pitch_deck.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367287/normal_5ff5b70c7ab1d.pdfIn PDF document text
    • https://cdn.sqhk.co/kidurukazag/ifjcjad/missiles_definition_simple.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382414/normal_5fdd7a94744ed.pdfIn PDF document text
    • http://ch-bewertung-2888.xyz/ultimate_life_simulator_apk_modphfcm.pdfIn PDF document text
    • http://sport-stavki.fun/28455677741v2wmg.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/tHMnOhe/todolist_abstractspoon_theme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426551/normal_601e702e8c7ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418013/normal_5ff62ffde5288.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/BPcjjja/manchester_university_sustainable_development_goals.pdfIn PDF document text
    • https://cdn.sqhk.co/wujozuzewed/hgi1hgy/cute_printable_work_to_do_list.pdfIn PDF document text
    • http://itasda.online/291520417984n7rp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386091/normal_602da494437d2.pdfIn PDF document text
    • http://bahis-sikayet.com/14731541203twfn7.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
    • http://dilizefolu.rf.gd/cat_game_uptodown.pdfIn PDF document text
    • http://fafalibowadavuz.rf.gd/zinujegojatomof.pdfIn PDF document text
    • http://wekijedi.epizy.com/64721599358.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/dna_genealogy_anatole_klyosov.pdfIn PDF document text
    • http://gafigap.epizy.com/30445374966.pdfIn PDF document text
    • http://jowunimigafej.rf.gd/jajoxemab.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/53655580294.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/98599723898.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/google_android_device_manager_find_my_phone.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF943 4756 bytes
SHA-256: 3f6d49a2e98a20e2ab2c0aefee974e828c626a7390747bb62bbb28f92fc93915
font_01_sfnt_off0001096c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096C 10824 bytes
SHA-256: 4dc8e24d849eecc67ef1f140ba8118b9e75ada875aa6b47a876a33b5ebea4ccf
font_02_sfnt_off00012e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E89 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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