Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25ee2506df530b0…

MALICIOUS

PDF

86.2 KB Created: 2021-03-17 17:51:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eef3cff238865716a487e228b0dc207c SHA-1: d187402bfa58a740bb94a31ae669eee060612519 SHA-256: e25ee2506df530b0d62a68ea08b9e6bfcebb5806ebdd344b02e34b640d4f168d
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a lure related to a free textbook download to disguise its malicious intent, which is characteristic of advance-fee scams. The embedded URL points to a domain that has been associated with malicious activity, suggesting the document is part of a phishing campaign. No scripts were extracted, but the document structure and embedded URLs strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://maypoin.ru/wix?keyword=nutrition+and+you+4th+edition+pdf+free+download
    • http://weareanonymous.org/tappan_gas_range_knobs5cssq.pdf
    • https://cdn.sqhk.co/tumupowe/k2yghB0/running_fred_apk_android_oyun_club.pdf
    • http://nejuwenazi.iblogger.org/5_inch_height_gain_book_download.pdf
    • https://static.s123-cdn-static.com/uploads/4388835/normal_6007e3ac5e72b.pdf
    • http://magatapomuv.22web.org/pen_writing_font_free.pdf
    • https://static.s123-cdn-static.com/uploads/4466411/normal_5ffbbc61d2c6b.pdf
    • https://static.s123-cdn-static.com/uploads/4445130/normal_5fe3e44036061.pdf
    • http://stnold.com/how_do_fossil_automatic_watches_workbrbzy.pdf
    • https://cdn.sqhk.co/vixukose/7iarhi4/wheelie_challenge_mod_malaysia_download.pdf
    • http://helplnstagramcontact6088758.com/power_of_a_praying_husband_military_edition3choe.pdf
    • https://cdn.sqhk.co/vujenibolo/2f8mU8x/alone_season_7_winner_now.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tobito/gebejufawawilefomurona.pdf
    • https://s3.amazonaws.com/wifukedot/chimera_ios_12._4._1.pdf
    • http://kagapari.rf.gd/android_root_software_for_pc.pdf
    • http://muloluj.rf.gd/epilepsy_australia_guidelines.pdf
    • https://s3.amazonaws.com/tufitijinexu/86481866042.pdf
    • https://s3.amazonaws.com/tiluwisulepam/blender_animation_for_android.pdf
    • https://s3.amazonaws.com/bupaxomu/online_complaint_management_system_project_report.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011047.bin
063c517537a9be72bcbbb89bc3d717e444ae690d48fe9861fbb66dc8c93965dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x11047 5204 bytes
font_01_sfnt_off0001221a.bin
1317952834a855588fce7b7a10d549dc0c95deb1b1e07ad76d5e4c788f325cb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x1221A 11660 bytes