Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ea6850a72c6f67…

MALICIOUS

PDF

76.2 KB Created: 2021-03-22 06:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0cc80ca2d9be0acf264ba3c865e0e0d SHA-1: 5f4e4eaba35e190960ff73f0431db8ec23100478 SHA-256: d4ea6850a72c6f6779289297b35ade563541d79568a49f4636bdbdf4c13b62e7
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 URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, suggests a lure related to 'elephant symbolism'. The presence of external URIs and the overall detection by multiple security tools indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=what+does+the+elephant+symbolize
    • https://cdn.sqhk.co/divojimo/gjihReV/hoop_stack_level_509.pdf
    • http://kixurox.getenjoyment.net/19496773620.pdf
    • http://levotavo.scienceontheweb.net/plot_diagram_of_dr_heideggers_experiment.pdf
    • http://all-host.site/gujigiwuwanaxiqwqne.pdf
    • http://topukovatawosu.sportsontheweb.net/tissot_t_touch_expert_solar_bedienungsanleitung_deutsch.pdf
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/xinip.pdf
    • http://getliterate.online/fegaruitjt4.pdf
    • http://elerctum.org/chord_overstreet_hold_on_videobuxkr.pdf
    • https://cdn.sqhk.co/lewikokezina/dHnPyAF/51121881913.pdf
    • http://mebel-albero.ru/is_tom_sawyer_island_still_at_disneyland4y7zh.pdf
    • https://cdn.sqhk.co/texekikevow/hhughZR/41628794705.pdf
    • https://makigutezun.weebly.com/uploads/1/3/4/7/134707077/5304419.pdf
    • https://venevivoxeda.weebly.com/uploads/1/3/1/8/131857756/zujolufaxul.pdf
    • http://e-sparks.ru/jamezizaduludrdhh.pdf
    • https://cdn.sqhk.co/dovepomazeri/egehhry/48312333527.pdf
    • https://cdn.sqhk.co/wizevomorofe/iiahdYK/10238021038.pdf
    • http://leqqurint.online/16382291097vic1q.pdf
    • http://tapasin.sportsontheweb.net/maxosemuxikefomosebafi.pdf
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/6817da26cbd4cb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sedowedi/free_able_airbrush_stencils.pdf
    • https://s3.amazonaws.com/zunewidimem/reflexive_pronoun_worksheet_4th_grade.pdf
    • https://s3.amazonaws.com/kozibowisenatu/descriptive_research_thesis.pdf
    • https://s3.amazonaws.com/dudurat/scream_2_soundtrack.pdf
    • https://s3.amazonaws.com/muwomapotumugi/tipapusuvadojapagujowif.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_off0000ed4b.bin
8f69ae87a2b43772867bd56cfaa94456c14bc15278d7ae5d7d0d4a5880d10a6c
pdf-font-stream PDF embedded font (sfnt) at offset 0xED4B 5408 bytes
font_01_sfnt_off0000ffa0.bin
939ac456a8a73ae8c89968dd732af7864e0cac237ad74ad4035d0b36916b7825
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA0 10364 bytes