Malicious PDF — malware analysis report

Static analysis result for SHA-256 d52f63083495e2b3…

MALICIOUS

PDF

79.1 KB Created: 2021-02-25 14:18:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6c78588d464e32222d734ce27deddd6e SHA-1: 4834c897187b1e34106d9010af11d19ac487ee3f SHA-256: d52f63083495e2b30d798d34f412f645d82334941c17f5e2d6aa0d57db0795ea
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deceive the user into visiting it. The document body, though heavily obfuscated, contains text related to the URI's keyword, suggesting a social engineering pretext.

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://seumenha.ru/award?keyword=the+nightingale+and+the+rose+summary+ppt PDF link annotation
    • https://cdn.sqhk.co/zidenesek/UHgj7aR/anti_submarine_warfare_shallow_water_craft.pdfIn PDF document text
    • https://cdn.sqhk.co/sugutomipu/DlhjjbD/rijezizisetezalajij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384650/normal_5ff5e81335e67.pdfIn PDF document text
    • https://cdn.sqhk.co/miwiwefe/HwiiheA/81541235595.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/ghyhaFZ/gezomugilujinufonibove.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/golds_gym_stride_trainer_350i_elliptical_instruction_manual.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/stress_concentration_factor_kt_formula.pdfIn PDF document text
    • https://cdn.sqhk.co/pavupaken/YeHhiNU/chop_chop_ninja_episode_13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412181/normal_6007f0b802c81.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/hcjgCvb/famoda.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/fjigdha/masterminds_book_movie.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484103/normal_5fc82a4344a38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401525/normal_5fdda3726f617.pdfIn PDF document text
    • https://cdn.sqhk.co/rotexopapi/bQijdwC/octopus_80s_arcade_games_list.pdfIn PDF document text
    • https://cdn.sqhk.co/zidezofa/Libhbgj/piresugopororetevod.pdfIn PDF document text
    • https://cdn.sqhk.co/jisokemefaz/Rihjdk6/dragon_quest_8_pc_requisitos.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kotodur/101_bodyweight_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/bloody_roar_2_for_epsxe.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/texmaker_presentation_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/video_compress_without_losing_quality_android.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/how_to_setup_a_xfinity_remote_to_the_cable_box.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9B 1724 bytes
SHA-256: 90fb1042126c15d8a796f6f88dc26108755fb6ca519e05b6d0de05ca6d3d969f
font_01_sfnt_off0000f825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF825 5424 bytes
SHA-256: a06193354d2f8b0e5f75121fb32a442f17b7a878a6f2971fafc6814daaa6bad6
font_02_sfnt_off00010a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A76 10468 bytes
SHA-256: b5247c8b8156004fa509c743eaa77b34965e87ba9d8d364b190a47e281b54cbd

Open this report in the interactive analyzer, or submit your own file for analysis.