Malicious PDF — malware analysis report

Static analysis result for SHA-256 b49ff2bc80aff09f…

MALICIOUS

PDF

78.3 KB Created: 2021-03-21 01:36:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1f9d5c2aae0c66e3639d74c4897b3b7 SHA-1: dd37a37dbcd2f07ae518bd0334eed2dba48222a0 SHA-256: b49ff2bc80aff09f8659a27466e0776f9692d769aecee3646838395b4a7921f6
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as an external URI pointing to a suspicious domain. ClamAV detection and ML classification strongly indicate maliciousness, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=sentence+with+all+words+starting+with+s
    • http://usmileofficial.site/beneganevalumerufq33qn.pdf
    • http://prizyivnik.ru/35788382182x648e.pdf
    • https://cdn.sqhk.co/disidudi/egjgihb/48409328663.pdf
    • http://therarbooks.com/innocent_words_that_turn_her_onbo5kl.pdf
    • http://bafujowop.22web.org/84499853389.pdf
    • https://static.s123-cdn-static.com/uploads/4401559/normal_6001e262cc0dd.pdf
    • https://static.s123-cdn-static.com/uploads/4450890/normal_5ff6c6f9df02d.pdf
    • https://cdn.sqhk.co/jupumezu/jcggyoM/plantuml_class_diagram_template.pdf
    • http://creditscorerepair.info/south_americas_longest_river_crosswordmuw9c.pdf
    • https://cdn.sqhk.co/putizimetiwe/jh44Lf3/world_empire_2027_pc.pdf
    • https://cdn.sqhk.co/firumefetev/LiaWCMK/shipwreck_cove_cultist_clue.pdf
    • https://cdn.sqhk.co/tinulafi/ccic3WJ/58731357574.pdf
    • http://stassikorskyi.com/best_books_for_5_year_olds_indiag73ef.pdf
    • http://bobimesufapi.iblogger.org/mutants_and_masterminds.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fedojigudaj/84883768931.pdf
    • http://riwexakax.epizy.com/amrita_nayak_song_pagalworld.pdf
    • https://s3.amazonaws.com/bevekizadoxuj/30700860272.pdf
    • https://uploads.strikinglycdn.com/files/82c43a83-2f82-48ef-8842-7c1ee251d6e0/how_to_hard_reset_lowrance_elite_ti2.pdf
    • https://uploads.strikinglycdn.com/files/258b3e7a-e912-4408-9b6a-6cd9984bd063/lulelunibaxoduxipesufu.pdf
    • http://dapunujunet.epizy.com/hard_candy_manufacturing_process.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e848.bin
9c84aca5171cf4522e1fd23f3e5391e17c8e645cdcb740b4c3036af6865bd014
pdf-font-stream PDF embedded font (sfnt) at offset 0xE848 2900 bytes
font_01_sfnt_off0000f28d.bin
919f2a2e02a869e84779381085da196b157ebd47978c29475dff7dc66a603da9
pdf-font-stream PDF embedded font (sfnt) at offset 0xF28D 5396 bytes
font_02_sfnt_off000104f0.bin
048d12d8154bfe6a92632e061211ef36279bdbab5e5b5f0405b508acd2456d50
pdf-font-stream PDF embedded font (sfnt) at offset 0x104F0 10572 bytes