Malicious PDF — malware analysis report

Static analysis result for SHA-256 823d7bcb833341aa…

MALICIOUS

PDF

76.3 KB Created: 2021-03-17 23:15:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6f4b7d6c74645b9051f570935076c975 SHA-1: 8e30c3600b8c11ff8e1024893d02bbe7eddecd13 SHA-256: 823d7bcb833341aa7137800457b60e37f77620e6ca691f4dd8c94bb9a1400e79
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a malicious site. The document body, though heavily obfuscated, suggests a lure related to a 'security council report'. No scripts were extracted, but the presence of external URIs and the ML/AV detections strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://golowaki.ru/123?utm_term=security+council+report PDF link annotation
    • http://patajafurep.mywebcommunity.org/ibps_rrb_clerk_notification_2020.pdfIn PDF document text
    • http://all-gopro.com/english_basic_grammar_in_tamilyj00l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455914/normal_5ff66108a6242.pdfIn PDF document text
    • http://tesocoin.online/scunci_steamer_troubleshootingf371i.pdfIn PDF document text
    • http://itactical.xyz/mevonar8qo4o.pdfIn PDF document text
    • http://gopidap.scienceontheweb.net/9053932910.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/21554593464.pdfIn PDF document text
    • http://jesofoma.getenjoyment.net/27438979385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414174/normal_603a5763399b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445532/normal_60182eccb9d07.pdfIn PDF document text
    • http://sovuxofi.66ghz.com/basic_electrical_electronics_symbols.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/942355293531dcx.pdfIn PDF document text
    • http://kavelokafozi.medianewsonline.com/oxford_american_history_book_series.pdfIn PDF document text
    • http://gayerkan.com/do_kitchenaid_mixers_go_on_sale_on_black_fridaydpayg.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/46734532110.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sojufuka.atwebpages.com/what_to_do_before_2d_echo.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/27540979477.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/94922372558.pdfIn PDF document text
    • http://xubedoper.epizy.com/chrome_android_desktop_mode_user_agent.pdfIn PDF document text
    • http://wonanikapudidak.atwebpages.com/audacity_meaning_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/xukuwejivisitapujavakusur.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/wii_animal_crossing_city_folk_bug_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/gomupepopavemibeda.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_off0000ee07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE07 4744 bytes
SHA-256: f25e6d35faa6541a7891cda7325f6fb5e9fd7b3332ea0f54c10e856c2117a801
font_01_sfnt_off0000fe45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE45 11284 bytes
SHA-256: 625609fc38997e5c6165d7b8ac9592062dfa1ceae909fbcb755d0915b429d90b

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