Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a19e80fc96b696a…

MALICIOUS

PDF

72.2 KB Created: 2021-03-01 15:15:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 45f88121dcfcb9fd78cb858614161abb SHA-1: ba833444760be9a05ff9c2503d2a4bf0d622f1a8 SHA-256: 0a19e80fc96b696a2665534b882b815f73785aaa4ed5dd352490404d25d086e0
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 payload. It contains an embedded URI pointing to a suspicious URL, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to product sales.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/wix?keyword=guide+gear+side-zip+insulated+duck+boots PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413016/normal_5fecd27c95d65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454432/normal_6033e8a1afced.pdfIn PDF document text
    • http://cosmostil.top/dino_jump_hacked1ljm1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419818/normal_60167ee41a4e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410702/normal_5feb162f4a6fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416327/normal_6012aafff34f3.pdfIn PDF document text
    • https://cdn.sqhk.co/mafozerekat/5wijXnN/6291948051.pdfIn PDF document text
    • https://cdn.sqhk.co/letaziseb/jichsHd/kagogifiriwosikef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365638/normal_5fe4d32e472e2.pdfIn PDF document text
    • http://lenudes.com/dialogos_sobre_fisica_atomicaff8lc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500670/normal_603400851afe5.pdfIn PDF document text
    • https://cdn.sqhk.co/futogifoku/BihcYhg/xafoxofuxeje.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496584/normal_5ffd520e39e35.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/bulolimepol/spider_solitaire_2_suits_free.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/assured_shorthold_tenancy_agreement_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/danewoji.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/12_major_scales_trumpet_finger_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/latest_metro_map_delhi_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/android_apps_on_iphone_jailbreak.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/wibaribewigov.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/call_of_duty_3_pc_compressed.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_off0000dac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC1 5560 bytes
SHA-256: 0304c30b71b09811a104bc6c7dfeffd182855451a74f124db7a09d672883abe8
font_01_sfnt_off0000edca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCA 11396 bytes
SHA-256: ed44ea035bb1a199b288c2181fcfe0a6f689aac50e4cf54629fffc2c131defde

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