Malicious PDF — malware analysis report

Static analysis result for SHA-256 a599fbf4e9670d52…

MALICIOUS

PDF

80.6 KB Created: 2021-04-08 01:57:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78850d59542854534dafb1c0c37f184c SHA-1: 5eb46f0a2417f3fdd34504f7f772918d83639fc9 SHA-256: a599fbf4e9670d5279c044cce0a77a8194f1f79c8584c3fa3433ef5b69e1add4
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 high likelihood of malicious intent. It contains an embedded URL that, when visited, likely serves a malicious payload or redirects to a phishing site. The document body, though partially corrupted, suggests a lure related to 'the crucible review packet answers', aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://mezovuduw.ru/wix?keyword=the+crucible+review+packet+answers
    • https://cdn-cms.f-static.net/uploads/4369146/normal_6058cc67c3dd8.pdf
    • https://static.s123-cdn-static.com/uploads/4377909/normal_5fc69a0f5c433.pdf
    • https://cdn.sqhk.co/bedipidis/jaxhhhd/4599046627.pdf
    • https://cdn.sqhk.co/matikefateri/evgihjM/dragon_skyrim_weakness.pdf
    • https://static.s123-cdn-static.com/uploads/4476593/normal_5fcfa855cc27f.pdf
    • https://cdn-cms.f-static.net/uploads/4414867/normal_606befbdc3296.pdf
    • http://damapilob.iblogger.org/advanced_adjectives_exercises.pdf
    • https://cdn.sqhk.co/widafopaj/bngfCjc/fizirijepedewi.pdf
    • https://cdn.sqhk.co/wanolugago/qjhyzjb/24776550740.pdf
    • https://cdn-cms.f-static.net/uploads/4476140/normal_6010a4bf16adc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/falejogajir/whiteboard_animation_software_for_ipad.pdf
    • http://majazizekor.epizy.com/45776938727.pdf
    • https://s3.amazonaws.com/tesotiwapax/pedaleira_zoom_a2_violao.pdf
    • https://uploads.strikinglycdn.com/files/b94df992-1b99-40cf-92ad-50cb96240629/how_to_use_gibson_g_force_tuner.pdf
    • https://s3.amazonaws.com/senodiw/kozalov.pdf
    • https://s3.amazonaws.com/lekezaru/brother_sewing_machine_manual_sc9500.pdf
    • https://s3.amazonaws.com/zabevog/moludafitixitewevovujak.pdf
    • https://s3.amazonaws.com/vipinib/xudarusefivaje.pdf
    • https://s3.amazonaws.com/nokiva/45933765655.pdf
    • http://jixukituzok.epizy.com/barcarole_in_der_nacht_noten.pdf
    • http://loxugosatutibiv.epizy.com/pharmaceutical_botany_textbook.pdf
    • https://uploads.strikinglycdn.com/files/3ca7b1e5-30dc-4730-9f51-bae7b4e84b3d/nazoliwaferasuvidekomabuw.pdf
    • https://s3.amazonaws.com/wizomoravazub/74874417880.pdf
    • https://uploads.strikinglycdn.com/files/bedc9d3f-7e6f-40fe-81e2-718e2cb8a28b/kivogenumegamasuwele.pdf
    • https://s3.amazonaws.com/zuguvoxoki/will_there_be_a_sequel_to_robin_hood_2010.pdf
    • https://s3.amazonaws.com/nosepevozux/tuwitonilidinajupazadep.pdf
    • http://gizamir.epizy.com/8959947237.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_off0000fefa.bin
7714ae53ce55d0e3f7f0c7e05cabf50536bffe93e06b049da26673d8097d513f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEFA 5324 bytes
font_01_sfnt_off0001111d.bin
32941c05c41574404df9d2a8771050f7eeb39501fbc742ac73a4097bba0521a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1111D 9960 bytes

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