Malicious PDF — malware analysis report

Static analysis result for SHA-256 325e550c6386d741…

MALICIOUS

PDF

83.7 KB Created: 2021-03-28 13:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0cb3d202cac27f99d9e1eb745a15e6f SHA-1: b8a7060ce8a6eb522ec747286e99afab86738ffe SHA-256: 325e550c6386d741480845907119ac0e6c233a981d004351690a42d350c01b12
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains keywords related to the URL, suggesting a lure to a site offering plans or information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://botokaw.ru/strik?utm_term=kenyan+top+bar+beehive+plans
    • https://cdn.sqhk.co/jowepotoxum/g7heIQS/standoff_2_download_free_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4443814/normal_5fec86c069582.pdf
    • https://cdn-cms.f-static.net/uploads/4494139/normal_60400b74a3e3c.pdf
    • https://cdn-cms.f-static.net/uploads/4420434/normal_60258eedab9cf.pdf
    • https://cdn-cms.f-static.net/uploads/4477173/normal_605ce4a4719d7.pdf
    • https://cdn.sqhk.co/futevanu/i2wYjgx/live_football_tv_app_per_ios.pdf
    • http://ditugivovuf.22web.org/zobilexiluxawuwonuguze.pdf
    • https://cdn-cms.f-static.net/uploads/4423757/normal_60344fb71705b.pdf
    • https://cdn-cms.f-static.net/uploads/4407724/normal_6015ca5799238.pdf
    • https://cdn-cms.f-static.net/uploads/4412905/normal_600f220d9b5db.pdf
    • http://vojirumabi.22web.org/dulujusedobividid.pdf
    • http://viwumurowiwoba.22web.org/18428416881.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wupiwupiwot/android_floating_action_button_position.pdf
    • http://waleluxafifa.epizy.com/bharata_rajyangam_free_download.pdf
    • http://purowubiwebig.epizy.com/ipa_vowels_chart.pdf
    • http://jasopiwutuv.epizy.com/windows_xp_install_keyboard_shortcuts.pdf
    • https://s3.amazonaws.com/gelawiweza/59113492176.pdf
    • https://s3.amazonaws.com/guxosa/craftsman_6.75_hp_lawn_mower_spark_plug.pdf
    • https://s3.amazonaws.com/tiluwisulepam/16036200965.pdf
    • https://s3.amazonaws.com/muvemasoxaji/the_math_book_download.pdf
    • http://zajimalivi.rf.gd/51307476789.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_off000108a1.bin
c06230a381b6c3ed6ecf8c59e022983c70206568110c187906d9accd65b8224c
pdf-font-stream PDF embedded font (sfnt) at offset 0x108A1 5176 bytes
font_01_sfnt_off00011a42.bin
b93fff2ce7912362a5ad4adad71a98f7fa3f7b48a99250699b2077d357e4bd0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A42 11400 bytes