Malicious PDF — malware analysis report

Static analysis result for SHA-256 af938ab7fce78f55…

MALICIOUS

PDF

83.0 KB Created: 2021-03-16 06:33:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09a670a9ed92affdde575eae584f49ae SHA-1: 7b5c19e071dc3f8e02c01e6cb44241d76d4b45d7 SHA-256: af938ab7fce78f555cabac47de460cc1bb1cced6b8ff9ff7d2e7b1a0c98600e4
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, which is indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or delivering a secondary payload. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://soxebez.ru/123?utm_term=bloons+td+6++iphone
    • http://livecopyrightverification.com/i_m_p_s_ka_full_form7qck4.pdf
    • https://cdn.sqhk.co/miwavilusaji/dX2jfhb/4792399268.pdf
    • https://cdn.sqhk.co/serodozire/cYk3DD8/76104550939.pdf
    • https://cdn.sqhk.co/rutisifelom/dto8tjf/20314926372.pdf
    • http://gokawojop.scienceontheweb.net/jisitexowi.pdf
    • http://tujidal.mypressonline.com/70978424528.pdf
    • http://xogunajeraxuda.mywebcommunity.org/wpf_sample_microsoft.pdf
    • http://tixshopclub.fun/2872926933s84l1.pdf
    • https://cdn.sqhk.co/jugomuzuteb/hajescj/80154956213.pdf
    • http://sizuxofutitarax.mypressonline.com/stable_coronary_artery_disease.pdf
    • https://cdn.sqhk.co/zutigaku/0TRWPge/leap_netflix_removed_2020.pdf
    • http://easterthjg.com/how_to_calculate_cm22cgdj.pdf
    • https://cdn.sqhk.co/pivokazi/pOhjeeR/world_flags_sphere_3d_polysphere_puzzle_answers.pdf
    • https://cdn.sqhk.co/bugolajoxodu/jcGljeL/tulegipoxejisevofa.pdf
    • https://cdn.sqhk.co/piwizogir/IhegclK/funny_facts_you_didn_t_know.pdf
    • https://cdn.sqhk.co/gujipiror/jehfgg0/cricket_wireless_login_to_my_account.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://nanexufagaw.epizy.com/calendar_november_2020_download.pdf
    • https://s3.amazonaws.com/vavabi/66304348731.pdf
    • http://dajidagetulawu.epizy.com/nametigikoxumuri.pdf
    • http://lujolugajejizog.epizy.com/96260116541.pdf
    • http://lidiwerefibe.rf.gd/taranegonizeranajapebuf.pdf
    • https://s3.amazonaws.com/wifukedot/aviva_pension_fund_performance.pdf
    • http://koduwutuvage.onlinewebshop.net/keracunan_arsenik.pdf
    • http://bokakemipik.epizy.com/apple_support_s.pdf
    • https://s3.amazonaws.com/wixatax/namespace_trong_android.pdf
    • https://s3.amazonaws.com/sakaburepagase/63068938620.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb3b.bin
78c10fb7a1067e28c8d2f036345367780d65db3816895f15441378f365d8913e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB3B 4732 bytes
font_01_sfnt_off00010b47.bin
5336daa1464fc01f2973ceae523f046d760f2e749504885376f53eadc2d70659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B47 10800 bytes
font_02_sfnt_off00013043.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13043 4324 bytes

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