Malicious PDF — malware analysis report

Static analysis result for SHA-256 857ee0f8100ac74b…

MALICIOUS

PDF

68.4 KB Created: 2021-03-09 09:45:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a861b0d0ccd9fde9901f6ca3157371c9 SHA-1: 7cc6c046cba0b46fe63e537198bf1808780e069f SHA-256: 857ee0f8100ac74b5e4a0d1c72cfd0e9a5144c41311aaec807205c003a5c1390
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The primary URL, 'https://jumiwimov.ru/award?keyword=burhan+bungin+metode+penelitian+kualitatif+pdf', suggests a lure related to academic research, likely to drive traffic to malicious or spam sites. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a phishing or trojan-like behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/award?keyword=burhan+bungin+metode+penelitian+kualitatif+pdf
    • https://cdn.sqhk.co/vujaderaz/ghe8hcs/52999573675.pdf
    • https://cdn.sqhk.co/rodofusavivi/fjgijgi/elements_massage_prices_spokane.pdf
    • http://bilkaita.space/195288093202rv1z.pdf
    • http://driveformclanemilwaukee.com/financial_accounting_1_by_valix_2015_edition_solution_manual_free_download8vthj.pdf
    • https://cdn.sqhk.co/bisidilit/ghjjagh/betafadejagajosopopepib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://1ce8651a-bfbb-4b9a-b1bf-24b3b574775a.filesusr.com/ugd/ac72e0_2e56982575c546499b63f68e094f9881.pdf?index=true
    • http://nixaruxabonijiw.rf.gd/66367148503.pdf
    • http://kubalomarupageb.epizy.com/luna_lovegood_glasses_template_printable.pdf
    • http://wawefib.rf.gd/92866254816.pdf
    • https://s3.amazonaws.com/kigavanus/sap_fiori_interview_questions_and_answers.pdf
    • https://s3.amazonaws.com/bepukuba/uncharted_pc_game_apunkagames.pdf
    • https://a97be2a3-bfb5-42de-bba9-b145341b31aa.filesusr.com/ugd/1f2860_b00fd7c6c8bc405e808c5d3926fe9beb.pdf?index=true
    • https://0879403c-3be5-48e4-925f-21334a7d5cfe.filesusr.com/ugd/407fcc_f23e7c9bb77841988742ba22df62a392.pdf?index=true
    • https://49550882-97ce-44db-a38b-6e383bb81149.filesusr.com/ugd/062c90_c4553853c9514c58ab9bf8ca899e9c7d.pdf?index=true
    • http://jagofebasej.epizy.com/33303552880.pdf
    • https://77047a80-9f17-4504-a563-a097c25ca12e.filesusr.com/ugd/5c8b2f_374b5b8f173340bd941c184856cad2c7.pdf?index=true
    • https://2703069b-a6ff-4ff9-983c-db139a8d76ba.filesusr.com/ugd/8b61cf_78ef43c2bce148d7b6db7191fdbaae46.pdf?index=true
    • http://xegiseko.epizy.com/cartoon_love_kiss_wallpaper.pdf
    • https://07d68bf2-0661-47e2-9ffe-eae068a071af.filesusr.com/ugd/fef806_c03145c1fc94457a9e83b7c8c1020a1e.pdf?index=true
    • https://d4508431-0eee-4913-ac2a-2ec907ed9b18.filesusr.com/ugd/12daa7_2f94bfa67e7048cdaba315291eb2dc4a.pdf?index=true
    • https://s3.amazonaws.com/guwutivupudutu/abies_fraseri_fact_sheet.pdf
    • https://73856814-13bb-4d44-aeaf-752cce6ba6bd.filesusr.com/ugd/a0d21a_d5d3e578581b484287a26b9719ded7cb.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d01b.bin
de6d7d453e11a2454f7934e79fa828614217ecbe2e396a6a6c6f520ec6d04581		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD01B 5528 bytes
font_01_sfnt_off0000e2bf.bin
e7170a56d5169b7734fc7f25e97e792e7496f5ac564109c187ac1a24ffb7243b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BF 9820 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.