Malicious PDF — malware analysis report

Static analysis result for SHA-256 43fdd7ef35bdaae2…

MALICIOUS

PDF

76.5 KB Created: 2021-02-24 03:05:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 086e6ba6b6d81dc1b6526c75bf7d72b8 SHA-1: 467bf210d0b9cdce7b80c303ca4627fab99b1e68 SHA-256: 43fdd7ef35bdaae2be26a9290d050a4d425bcb95ec447f296be8ab9adc4ec6c7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when clicked, likely leads to a phishing or malware download site. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used for phishing attacks, often leveraging JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/strik?utm_term=using+the+graph+below+calculate+the+density+of+the+salt+water+solution PDF link annotation
    • https://cdn.sqhk.co/toxinize/ozhZDid/62430780778.pdfIn PDF document text
    • http://modebedunizux.iblogger.org/jopasakunaxuzotifunexiwo.pdfIn PDF document text
    • https://cdn.sqhk.co/figotabam/vEahjOL/62861366327.pdfIn PDF document text
    • https://cdn.sqhk.co/pofifarim/yqkiiid/bandai_namco_jobs_europe.pdfIn PDF document text
    • https://cdn.sqhk.co/gebijowokobe/pQEjfle/36449371744.pdfIn PDF document text
    • http://slmit.space/pdf_to_jpg_small_sizedcte9.pdfIn PDF document text
    • https://cdn.sqhk.co/gagadobuv/e2ihUij/rakabopexebanamadiw.pdfIn PDF document text
    • https://cdn.sqhk.co/xazewizol/gcfsCig/gemotugebo.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/jVJiaJs/virokipakiwafaxemorufogat.pdfIn PDF document text
    • https://cdn.sqhk.co/furigelo/hSgduhg/37238268473.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pagitewuzowika.epizy.com/40229005271.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/angry_birds_star_wars_2_apk_hacked.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/12651131105.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/how_old_is_ahsoka_in_mandalorian_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/capsula_articular_de_la_cadera.pdfIn PDF document text
    • http://rudozanel.epizy.com/aladdin_4k_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/putujuvotodozeraj.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/94640652129.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/3225119632.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/21314976192.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/33875853401.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/arm_microcontroller_free.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F8 5740 bytes
SHA-256: a0d91c062ba95caae550d357067e0dee9134ffa33222ec53b38b32317362f268
font_01_sfnt_off0000fd93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD93 11132 bytes
SHA-256: d65fc7ceb3bdeddf8be3cda40afe632ff455603249d1b91fdcc27ed1a48ef626

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