Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c9e3ec6a09cef3…

MALICIOUS

PDF

74.5 KB Created: 2021-03-11 23:52:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ae557b0e5ecc2a0f3104ccc0936d58f SHA-1: 5b542883ebffb8c676a4c4a115d150abbe4cbdf0 SHA-256: d2c9e3ec6a09cef3b6272c4a0d3b74fb8159925fa01b7cc7fe28f26a77ed8a29
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 phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'cold war study guide worksheet'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware delivery attempt.

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
  • 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://xezojetit.ru/wix?keyword=cold+war+study+guide+worksheet
    • http://hopecommunitynaz.com/75490751893pguhd.pdf
    • http://xuvaxujogilo.mygamesonline.org/are_all_panasonic_dect_phones_compatible.pdf
    • http://chisto-chisto52.ru/cuttack_weather_report_livewkdqv.pdf
    • https://devudupaf.weebly.com/uploads/1/3/4/8/134880603/xowivin.pdf
    • http://tifoxikutawe.sportsontheweb.net/jopeturumufaperumi.pdf
    • https://sivipafegedijog.weebly.com/uploads/1/3/4/4/134443607/moluxibewob.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xolevusafo.myartsonline.com/10450414740.pdf
    • http://lipeporo.onlinewebshop.net/administracion_publica_peru.pdf
    • https://uploads.strikinglycdn.com/files/6177668b-7035-4c5e-a239-ecd5a4ea43f0/pudaxezoboge.pdf
    • https://uploads.strikinglycdn.com/files/891dfcdf-6087-49cb-a457-feb752be328c/99841900673.pdf
    • http://zevusup.atwebpages.com/how_hard_is_gre_quantitative_questions.pdf
    • http://maretubozewugi.myartsonline.com/canon_rc-6_remote_control.pdf
    • https://s3.amazonaws.com/nigimul/56620165376.pdf
    • https://s3.amazonaws.com/davawina/xuboxexojuwejukaxopuxig.pdf
    • https://uploads.strikinglycdn.com/files/19218fbf-44a5-4f92-983e-446aec558b37/dalolemoxazalojowax.pdf
    • http://bumurulepowele.myartsonline.com/indian_cookbook_author_madhur_jaffrey.pdf
    • https://s3.amazonaws.com/pesetufavo/char_broil_smoker_grill_recipes.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_off0000e710.bin
dc983a59cb5eb7f16a38eb21cfcf49c7d7cd32e394802423fae00e3528f7b58b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE710 5248 bytes
font_01_sfnt_off0000f8f4.bin
9df5ad73995dff4dccfd3eb6ed4fb1c49ca2a6d956acb112ff571d601fac396a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F4 10580 bytes