Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f19b9f34fa95110…

MALICIOUS

PDF

63.1 KB Created: 2021-03-01 20:37:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cf03d2c99d0a4fe8dadd54852c1cb362 SHA-1: ec14807502528fe3f28d7d8323e127928c82dff2 SHA-256: 5f19b9f34fa951105ff7128e46d471de5985cbbf3acf3b0be8b40c78825757b3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://nipisod.ru/wix?keyword=penguin+diner+unblocked+bobo PDF link annotation
    • http://wiinorama.space/pidusujjw1rv.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzetuzame/cjeZxij/xoxexuxukoxukuva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421365/normal_6036c33ee8105.pdfIn PDF document text
    • https://cdn.sqhk.co/nomelafu/etPifgc/master_s_degree_online_art_teacher.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/ba1iaij/beautiful_places_in_the_world.pdfIn PDF document text
    • http://shoppermarket.online/magic_warped_bundle6i63n.pdfIn PDF document text
    • http://0fruit.space/bond_fund_performance_today3jtdr.pdfIn PDF document text
    • https://cdn.sqhk.co/gazejuruni/hcgjNjg/nintendo_switch_lite_games_cooking_mama.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/jTgj6ii/noob_vs_pro_vs_hacker_2_jailbreak_download.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/moduxanakuri/metodologia_dela_investigacion_cientifica_tipos_de_estudios.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/best_performing_superannuation_funds_australia_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/internal_audit_reporting_structure_best_practices.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/google_plus_sign_in_android_example.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/18998964649.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_off0000bd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD62 4924 bytes
SHA-256: 4054130fc7502d5eb8bc183080032f4088e6b0ac2ea96029a0fe3c14ac343f4b
font_01_sfnt_off0000ce37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE37 9776 bytes
SHA-256: 20af3328b37866d8a52c5f956f56099cd993c051e525d479a9dc945ed1ad7c0d