Malicious PDF — malware analysis report

Static analysis result for SHA-256 87242ab7cfcefaaa…

MALICIOUS

PDF

72.2 KB Created: 2021-01-19 06:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 31f205111a5e0963b0e278723c0cda39 SHA-1: 6f771541047a46d5ff48760db6fe1385cd1bae79 SHA-256: 87242ab7cfcefaaa02abed25452298693dbd3197ac25349438b8d2cd9d2fd652
96 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 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://traffset.ru/123?utm_term=lista+de+prefijos+y+sufijos+en+ingles+pdf PDF link annotation
    • https://cdn.sqhk.co/jokalirubore/hdehfjh/talking_cat_funny_video_song.pdfIn PDF document text
    • https://site-1176609.mozfiles.com/files/1176609/lamedipubajerugegefelifu.pdfIn PDF document text
    • https://cdn.sqhk.co/zufuxirap/ijigeje/49720625230.pdfIn PDF document text
    • https://cdn.sqhk.co/vitozogog/gzgg3jj/sitigebekefumibesabizewuf.pdfIn PDF document text
    • https://site-1168131.mozfiles.com/files/1168131/29109749086.pdfIn PDF document text
    • https://site-1208189.mozfiles.com/files/1208189/67906951177.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/eBggijl/lakugitilojimasulupuwanux.pdfIn PDF document text
    • https://site-1188816.mozfiles.com/files/1188816/wolf_wallpaper_phone.pdfIn PDF document text
    • https://site-1248967.mozfiles.com/files/1248967/dazn_android_tv_apk.pdfIn PDF document text
    • https://site-1173368.mozfiles.com/files/1173368/aashiqui_2_movie_naa_songs___com.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/vovabagubajegeb/enclave_questionnaire_answers_fallout_76.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/tubiben.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/lifecam_vx_3000_driver_windows_8.1.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/22064318700.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/coat_of_arms_design_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/viraxetoxivuduworekujolaw.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/pobimogafabebizugeno.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_off0000daed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAED 5328 bytes
SHA-256: 7f25b0ff65210690a5a81a5a6afe6c9785cb7342774a30dbd24d5405d2e63b76
font_01_sfnt_off0000ed32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED32 11408 bytes
SHA-256: abce5b3bdcda6d08feea721b562baec2165ba083cdbf75f39cbe3039196f551a

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