Malicious PDF — malware analysis report

Static analysis result for SHA-256 81b0ae3e3d1fc1af…

MALICIOUS

PDF

70.6 KB Created: 2021-03-21 21:14:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d500a0d783015a6bc94104b9d591f6df SHA-1: 56ba7ab27b73cc79e606ffb2b180e32da6263254 SHA-256: 81b0ae3e3d1fc1afc460a693783e6678d6d3a1e9a1c321f12337e7bda5b9498b
136 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://botokaw.ru/award?keyword=billie+s+bounce+pdf+real+book PDF link annotation
    • http://nesebonuvobeju.getenjoyment.net/excelsior_brewing_patio.pdfIn PDF document text
    • http://baffer-shop.space/deresimujizufojepafpm07.pdfIn PDF document text
    • https://cdn.sqhk.co/vedisaso/hh3gfeD/spider-_man_video_movie_boy.pdfIn PDF document text
    • http://drive4mclaneaustell.com/544652387670f3q1.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/bsc_2nd_year_chemistry_syllabus_2020.pdfIn PDF document text
    • http://ig-supportcenter.xyz/92079934830yyal8.pdfIn PDF document text
    • https://cdn.sqhk.co/pugalaleluti/jeahfzB/t_mobile_high_speed_wireless_home_internet.pdfIn PDF document text
    • http://pedagodogiko.getenjoyment.net/save_webpage_as_firefox_ubuntu.pdfIn PDF document text
    • http://doordash.link/kokogorigawoxogasipe2xux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tibitexil/74960242305.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/cateye_mity_8_bracket.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/48802923170.pdfIn PDF document text
    • http://tagijonegularol.myartsonline.com/scrabble_two_letter_words.pdfIn PDF document text
    • http://sujawokasafu.onlinewebshop.net/rasipifafefovuma.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/nuzamukinoxakawimo.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/boogie_nights_movie_in_tamil.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/bio_energy_healing_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/fudanijugow.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/2006_ford_6.0_powerstroke_oil_capacity.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_off0000d395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD395 5404 bytes
SHA-256: a20cc097da178b125b86f563e7d7a6d91cd7b86dae58e7f767e41e82ed71235f
font_01_sfnt_off0000e600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE600 11528 bytes
SHA-256: 713e9a2e5016edcc1629896f8db1919766672636f9aaf6dcce6a5940900b2acf

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