Malicious PDF — malware analysis report

Static analysis result for SHA-256 31f890d268e6d4a0…

MALICIOUS

PDF

75.7 KB Created: 2021-02-24 00:16:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e15146be50b3a58539da87adcecbfa1c SHA-1: 3c203591b6a69eb62baa14b5f036c0ef80eda659 SHA-256: 31f890d268e6d4a067420d1a7023388dd40cc91622e3ed7e90621743e772155b
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with a critical heuristic firing for ClamAV detection. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. The presence of embedded URLs and the overall detection strongly suggest a malicious intent, likely related to phishing or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/123?utm_term=jandy+salt+system+error+code+145 PDF link annotation
    • https://cdn.sqhk.co/nojumuku/hhM0gjG/game_i_m_ping_pong_king.pdfIn PDF document text
    • http://xovekofetovo.66ghz.com/62057727459.pdfIn PDF document text
    • https://cdn.sqhk.co/sarowojep/f8hiUeE/lujomagonebusajoluliri.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/YcgjhgJ/line_play_our_avatar_world_mod_apk.pdfIn PDF document text
    • http://fiduwil.iblogger.org/20889993406.pdfIn PDF document text
    • https://cdn.sqhk.co/xedogigiloli/hirtfib/stickman_slayer_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/g4Eijjc/kikkerland_pencil_sharpener.pdfIn PDF document text
    • https://cdn.sqhk.co/xivomojuf/ntORVgi/open_world_games_like_gta_san_andreas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pepuzigupa.epizy.com/wugerog.pdfIn PDF document text
    • http://sarozaxag.epizy.com/serious_illness_conversation_guide_sicg.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/answer_key_upsc_2019_set_c.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/63609505550.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/simple_house_designs.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/80547249401.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/anand_movie_songs_naasongs.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/duwapojovulafuwoju.pdfIn PDF document text
    • http://pizibajavodup.epizy.com/wavakeposamumepiluwozam.pdfIn PDF document text
    • http://tomenederixi.epizy.com/57946818496.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/transformers_botbots_checklist.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/braintree_scientific_syringe_pump_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/worumetedobezoxofan.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE870 5440 bytes
SHA-256: b0a735af3b7dbe6d3abfcc2bb7dd1f9537460fb1565d985349c3901a0309b799
font_01_sfnt_off0000faf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF0 11308 bytes
SHA-256: 84b37406cbc6c9e436f7bd03c344434063a069f33b8aa30d8251c4ab5dddcfc1

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