Malicious PDF — malware analysis report

Static analysis result for SHA-256 80748439222dfc17…

MALICIOUS

PDF

78.7 KB Created: 2021-04-18 04:55:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7130a2f2a4638527486048f31ae7134d SHA-1: 55df23d00f24ce92b7c279e0c489e03fe9757873 SHA-256: 80748439222dfc1786fdbd3fb05a871fd0381530a1f801b4775445918705e48d
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 0.9997

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://dafemum.ru/strik?utm_term=blank+map+of+europe+wwii PDF link annotation
    • http://pinenud.mygamesonline.org/calidad_del_aire_medellin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384150/normal_601ac73b4f856.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_6067585400952.pdfIn PDF document text
    • http://puwobero.22web.org/answer_of_tell_me_about_yourself.pdfIn PDF document text
    • https://dususujere.weebly.com/uploads/1/3/6/0/136024938/vulijixanofen-vujivuzolanibir.pdfIn PDF document text
    • http://ritibaj.22web.org/freezer_paper_sheets_michaels.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457577/normal_605f79471d8e6.pdfIn PDF document text
    • https://gabofulonu.weebly.com/uploads/1/3/4/7/134730366/lotud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384143/normal_5fd78d2c61773.pdfIn PDF document text
    • https://kejifesabateg.weebly.com/uploads/1/3/4/8/134847793/9606024.pdfIn PDF document text
    • https://bewanabexujafo.weebly.com/uploads/1/3/6/0/136050633/zowal-wuwawusimozub.pdfIn PDF document text
    • http://folokuvatajaweg.22web.org/72396719527.pdfIn PDF document text
    • https://lawoxotat.weebly.com/uploads/1/3/4/5/134587222/dibexa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jeruzofifisamen.rf.gd/android_oreo_or_ios_11.pdfIn PDF document text
    • https://814cba0f-f649-4223-bfe6-7884e6e02b9d.filesusr.com/ugd/c1108c_e59cadee548847319a1c4e16e5e5d180.pdf?index=trueIn PDF document text
    • https://0ed30ddb-3df1-4505-9e4e-3e87fc6d20ea.filesusr.com/ugd/f043c1_910d5de5d1474f75850020bc23c679ee.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/285dd365-1bf0-4811-ab17-ae33cac22c20/how_to_charge_a_ps_vita_without_charger.pdfIn PDF document text
    • https://6200e599-3f2f-4e3e-ab45-e6977ed7e777.filesusr.com/ugd/f8de3e_cf900c9d40e841849c9d87a38dd2b172.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/12cb7ad2-836f-42fe-97be-dab7240f303b/the_war_at_home_us_history_shorts_2_answers.pdfIn PDF document text
    • https://0f7a2101-273c-4f7f-b1fd-079d1ad923c1.filesusr.com/ugd/a7ea6f_55c35d1b35114749af068043e6114a7f.pdf?index=trueIn PDF document text
    • http://vesebiven.rf.gd/bonibutojuzezidojejigoj.pdfIn PDF document text
    • http://zegiwewezenaro.myartsonline.com/fabor.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_off0000f457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF457 5076 bytes
SHA-256: b58c252378c45a1a4a902f13faf8bba47475de4a78b99efae41663a84b64437c
font_01_sfnt_off00010599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10599 11964 bytes
SHA-256: addf651264480d56153df150ef7842cf693f64befb4fb9b6f1671fd3875f0fa6

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