Malicious PDF — malware analysis report

Static analysis result for SHA-256 141e75ef22a4aadf…

MALICIOUS

PDF

66.8 KB Created: 2021-02-12 07:59:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3be3ea77405bb4caf261cc01226cbe53 SHA-1: 567d8cfe942a10e64f8dd85d139a434e9f4c3343 SHA-256: 141e75ef22a4aadf78f5f6ae0b629277ca6411828e0d5e649c2892a27da626dc
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'crophysi.ru'. ML classification and ClamAV also flagged this file as malicious. The embedded URL is likely part of a phishing campaign designed to lure users into visiting a compromised site.

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://crophysi.ru/wix?keyword=evenflo+symphony+65+owner%2527s+manual In PDF document text
    • https://cdn.sqhk.co/kibutonap/njjw5gh/donkey_kong_arcade_classic.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/idJRgl5/jijakipafisebipe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491725/normal_5fe3d7d3a379c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413713/normal_5fd3d0d367741.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/hjgTozz/xedowovole.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzetuzame/lYvgeYe/manaj.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/fa11hhx/herpes_simplex_virus_1_2_ab_igg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375896/normal_60055dd3bd57f.pdfIn PDF document text
    • https://cdn.sqhk.co/pegipoveridi/yhjbgj5/98135306131.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/chizpjc/fall_start_date_2020_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/id8Kpji/zombie_city_defender_adventure_at_zombieland_2.pdfIn PDF document text
    • https://cdn.sqhk.co/vimexuda/cAgjhR3/40947089996.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367642/normal_5fcbe9771f396.pdfIn PDF document text
    • https://cdn.sqhk.co/sesexibanobu/thfSUjh/79733147783.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/fipijife/22934941126.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/imperial_march_sheet_music_flute_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/badoo_app_android_kostenlos.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_off0000c5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5FF 5664 bytes
SHA-256: 53b76067b0b70d440c1d5c606edb32c89adf6e46b903ae6f6037eff7e8dc065f
font_01_sfnt_off0000d944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD944 10480 bytes
SHA-256: 10b44a8122034602859c2c9ffb89fe50fa6b4d157545ab1be352a4155a3a3b8a

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