Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a3394b243ab17b…

MALICIOUS

PDF

74.8 KB Created: 2021-02-24 14:10:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0581a5535c43668cd875943af7b80fcf SHA-1: 89a7c9aa0492156b61201606bb58c3cc8c086d7a SHA-256: 37a3394b243ab17bd79931cac271504e9e00a0249fc72e689cf7c7acf8b98a35
154 Risk Score

Malware Insights

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

The PDF contains a link to a malicious redirector disguised as a TV show script, aiming to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is a primary indicator of a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=modern+family+season+1+episode+11+script In PDF document text
    • https://cdn.sqhk.co/xipepovivik/ACCijqh/debegogudugimod.pdfIn PDF document text
    • http://genijiloxaxu.iblogger.org/nios_marksheet_10th_2019.pdfIn PDF document text
    • http://jumovuv.22web.org/agility_guide_osrs_theoatrix.pdfIn PDF document text
    • http://d-youtube.com/106448713549ng00.pdfIn PDF document text
    • http://on-arenas.com/40707462163arume.pdfIn PDF document text
    • http://copyrightproblem.com/42516849973erwhe.pdfIn PDF document text
    • http://wofupovuneraja.iblogger.org/62378477189.pdfIn PDF document text
    • http://mestorating.ru/is_toro_a_good_brand_of_zero_turn_mowerpkxl9.pdfIn PDF document text
    • http://abzac.me/15616555876euw4e.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/tubupejevomo/90041627398.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/canine_neuter_surgery_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/bid_wars_mod_apk_2._10._1.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/60873724205.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/arboles_de_navidad_originales_manualidades_faciles.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/bazigotibuwidulesapupada.pdfIn PDF document text
    • http://wolasuwalijite.epizy.com/zamilamudukovowo.pdfIn PDF document text
    • http://fivefujowopigu.epizy.com/allow_bet_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/27895299571.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/potivipudepuko.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_off0000e71b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71B 5460 bytes
SHA-256: 7379b25c6249684154d15bb1833f98e1b54d64cd6e5c68a90d681ddf03b2e81f
font_01_sfnt_off0000f9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B4 10636 bytes
SHA-256: 1a36f622e5c0f56f6ce79840df69552008efae77d047b397455602d9f29a3983

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