Malicious PDF — malware analysis report

Static analysis result for SHA-256 04c119101c16af2c…

MALICIOUS

PDF

71.2 KB Created: 2021-03-15 17:14:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 3e77f7add029d4b4c429e05690c1b3e7 SHA-1: a267d82390bf191dd042ce804b3ed953f32f87e4 SHA-256: 04c119101c16af2c81fc2af18a3815a99a267d59fa47f70b293c443ccaf3eac4
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains and employing UTM parameters, indicative of a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://jottigo.ru/strik?utm_term=how+to+put+belt+on+kenmore+washer PDF link annotation
    • http://suzenax.22web.org/appreciation_certificate_design_free.pdfIn PDF document text
    • https://wosutazewaxutu.weebly.com/uploads/1/3/0/7/130775331/4b277b0.pdfIn PDF document text
    • http://rewokujow.scienceontheweb.net/38450317859.pdfIn PDF document text
    • http://losmopaka.site/game_bully_scholarship_edition_pc_gratisr0l4q.pdfIn PDF document text
    • https://fedubipogumuwu.weebly.com/uploads/1/3/1/3/131379546/5750756.pdfIn PDF document text
    • http://pop-marketplace.ru/through_the_wormhole_with_morgan_freeman_full_episodes0rzcq.pdfIn PDF document text
    • http://kprovk.xyz/devious_devices_keysa2sou.pdfIn PDF document text
    • https://gefawopunov.weebly.com/uploads/1/3/0/9/130969454/rasizerejirizizako.pdfIn PDF document text
    • http://idealsit.fun/casio_protrek_prg-270-1adr33132.pdfIn PDF document text
    • https://gakififevorejep.weebly.com/uploads/1/3/1/8/131872199/4163502.pdfIn PDF document text
    • http://onkoprofi.ru/768305721389mqds.pdfIn PDF document text
    • http://vekisonoloze.sportsontheweb.net/18351915226.pdfIn PDF document text
    • http://dezunanerab.iblogger.org/sports_vocabulary_exercises_intermediate.pdfIn PDF document text
    • https://jefaganogebe.weebly.com/uploads/1/3/1/4/131437435/geduxokulumap.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/83212027817.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/febopa/gugoroziw.pdfIn PDF document text
    • http://gotabuwane.epizy.com/calculus_a_complete_course_solution.pdfIn PDF document text
    • http://munoxefarofow.rf.gd/best_angkor_wat_guide.pdfIn PDF document text
    • http://kimaponupotowi.rf.gd/nationstates_bbcode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/fidupe.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/cooperation_agreements_template.pdfIn PDF document text
    • http://zovitox.epizy.com/banshee_workshop_manual.pdfIn PDF document text
    • http://poresiz.epizy.com/goratiwipuzubesibibojuvu.pdfIn PDF document text
    • http://womawujun.atwebpages.com/runizerip.pdfIn PDF document text
    • http://nedugone.epizy.com/assembler_photoshop.pdfIn PDF document text
    • http://paguxesij.myartsonline.com/kurunikokezapaf.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/30267868514.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/39138521514.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA85 5316 bytes
SHA-256: 53d57bef0bc3bd619d3ecd21bc37414496bac380e94ecaa735508bad67356864
font_01_sfnt_off0000ec6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6E 10020 bytes
SHA-256: 29f3760b914db5d10df441af4a81930dcf9f0adb612a3f8c1b5ecdb04f06fd01

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