Malicious PDF — malware analysis report

Static analysis result for SHA-256 c938309f28c30c22…

MALICIOUS

PDF

77.9 KB Created: 2021-03-02 13:01:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4960212975a0ae717b899524d8f4da5a SHA-1: 129519fc310f220f0f0d7644b296ba8676cad828 SHA-256: c938309f28c30c22a508593e5b10965d5ce41bbc159fcb3d30829ed194bb88b3
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, 'jumiwimov.ru', which is likely used to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'leader's 100-day action plan'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing attack.

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
  • 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/strik?utm_term=the+new+leader%2527s+100-day+action+plan+executive+summary
    • http://bixuvukulizolu.22web.org/how_to_reset_meade_autostar_controller.pdf
    • https://dafavazama.weebly.com/uploads/1/3/4/8/134893815/rubib.pdf
    • http://fawikenaxalu.scienceontheweb.net/22490535638.pdf
    • https://tuxutumixebapi.weebly.com/uploads/1/3/1/4/131438514/mitovejawifejiboxotu.pdf
    • https://nafogoke.weebly.com/uploads/1/3/4/7/134776139/5836071.pdf
    • https://xatiletovolut.weebly.com/uploads/1/3/1/4/131409128/dfee6cf1956.pdf
    • https://static.s123-cdn-static.com/uploads/4377933/normal_5fff71dad0c8b.pdf
    • https://cdn-cms.f-static.net/uploads/4473056/normal_60179b5c4d5fa.pdf
    • http://tevejovevufosis.22web.org/8040286041.pdf
    • https://cdn-cms.f-static.net/uploads/4383156/normal_6011b3dfc3c9a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gezetega/xubujuduvomonizijifurunu.pdf
    • https://s3.amazonaws.com/rebesudanolo/does_trevor_and_tessa_ever_get_together.pdf
    • http://sikejilewiz.epizy.com/last_battleground_survival_mod_apk_latest_version.pdf
    • http://petojijoxura.onlinewebshop.net/what_is_the_meaning_of_the_little_prince_story.pdf
    • http://noroved.myartsonline.com/how_to_board_a_ship_in_the_navy.pdf
    • http://xasezujagabef.epizy.com/lularoe_jeans_fit_guide.pdf
    • https://s3.amazonaws.com/jupevuxirapi/86077507409.pdf
    • https://s3.amazonaws.com/jesidofefe/abrsm_jazz_piano_pieces_grade_1.pdf
    • https://s3.amazonaws.com/zesixefe/waxakepovilatekapasu.pdf
    • 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_off0000ed8c.bin
59c900b834ad69c0181a2a6b10d854ef06d777f2c44b09602de08952e7dfe910
pdf-font-stream PDF embedded font (sfnt) at offset 0xED8C 5844 bytes
font_01_sfnt_off00010179.bin
a22756d99672426110a2642ccc693a29d956e3e2fab6820849ba028f734ed1cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x10179 11176 bytes