Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f73f44c02f7510…

MALICIOUS

PDF

72.4 KB Created: 2021-03-02 08:46:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 73b07c1be8dbc887386cd002b67d4f37 SHA-1: 84d74698dce1d61acfd6cf4a38630af308264444 SHA-256: e9f73f44c02f7510e2f12f2c2c58dadaad03e7b18bf1b649442a1e4370c629d5
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 URL that appears to be a search result for a game mod, likely a lure to trick users into downloading malware. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=kingdom+rush+frontiers+apk+mod+all+heroes+unlocked PDF link annotation
    • https://cdn.sqhk.co/ganidabizi/c7yWNhf/nike_run_club_facebook_connection_error.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383689/normal_6026178cae16d.pdfIn PDF document text
    • http://mirumumavetifun.mypressonline.com/descargar_musica_de_antony_santos_mix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417033/normal_5ff8c4e945787.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393369/normal_601d33f90db6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390383/normal_60319287ba0cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422371/normal_5febbf5a28b54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373755/normal_6033ae4243826.pdfIn PDF document text
    • https://cdn.sqhk.co/jisaside/e9DoidQ/why_is_rotator_cuff_surgery_recovery_so_painful.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455376/normal_6004987c79c46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376358/normal_5fdc5ef4e1778.pdfIn PDF document text
    • https://cdn.sqhk.co/joraxeneli/vsdmUgh/fruits_legend_2_game_download.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/kabisebax/ccleaner_pro_full_kuyhaa_android.pdfIn PDF document text
    • http://pimekawuxa.epizy.com/little_red_riding_hood_characters_fairy_tale.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_off0000ddb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB1 5604 bytes
SHA-256: 25089e39edc52df4b9f0505147c6d7f63fb2c53cc3a1b7771385aec172e16b67
font_01_sfnt_off0000f09a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09A 10412 bytes
SHA-256: 74a6ecfcc1b5f8ab251566f3565c8e4dac66c2bf7241bc96755b3393d0e8d57e

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