Malicious PDF — malware analysis report

Static analysis result for SHA-256 14696a085de3d544…

MALICIOUS

PDF

85.7 KB Created: 2021-05-14 21:55:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 964033af9666ef300d63be141660f98b SHA-1: 586148fefc69bb0bd01800201aed6c91109be1a5 SHA-256: 14696a085de3d544c60b6f596298bd0b212f6595014da8d8da1be74935d246cb
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, with the primary malicious URLs being golowaki.ru and yellownatural.space. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the nature of the link farm suggests an attempt to redirect users to malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/strik?utm_term=tipping+point+apes PDF link annotation
    • http://yellownatural.space/zaluwotudege3jxvt.pdfIn PDF document text
    • http://reduslim-italiaufficiale.site/bocasalina_restaurant_formenterak6xcm.pdfIn PDF document text
    • https://purotuduveb.weebly.com/uploads/1/3/0/7/130738796/kojalopajab_zagazim.pdfIn PDF document text
    • http://losinglotterynumbers.com/health_o_meter_digital_scale_reviews83r4t.pdfIn PDF document text
    • https://cdn.sqhk.co/mifimafonuku/Fib9Nib/44190441110.pdfIn PDF document text
    • https://cdn.sqhk.co/vunelebu/mig4heU/chateaux_family_practice_broomfield_co.pdfIn PDF document text
    • https://cdn.sqhk.co/viwedanej/kghzoii/59514022906.pdfIn PDF document text
    • https://ludurodeb.weebly.com/uploads/1/3/4/8/134852143/cc636268d7022c.pdfIn PDF document text
    • https://cdn.sqhk.co/sowodopevew/ggjhDcS/skin_for_among_us_wallpaper_aesthetic.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/372c6128-00e3-4d73-b4c3-f115debc6cc5/nunud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/288fd489-d0ed-41a4-93a6-0f75ec82024e/how_much_oil_does_a_2004_jeep_liberty_take.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/scrutinizer_report_format.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/96536977602.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/69250542142.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/quadratic_equation_solver_fraction_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c162a8d3-b54a-4a53-bfed-93127361c08b/what_is_the_theme_of_the_book_the_fault_in_our_stars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa61b85a-cb58-42df-b931-1588a817346a/kilobobolobexuwupa.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/does_calculus_2_get_easier.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/tibefujopefutixize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/754e7d27-641e-4502-83d6-41001d7b4e9c/whirlpool_duet_front_load_washer_error_code_f3_e1.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_off00011208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11208 4808 bytes
SHA-256: 63feeec9519ae7271bfb09a0ecdecf8d6c347a046ba7b45dbad559df4e9e2412
font_01_sfnt_off0001227f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1227F 11880 bytes
SHA-256: e4843215c4066f18ddf745fad85a8015025161348f0b805c098029cf4b7727f5

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