Malicious PDF — malware analysis report

Static analysis result for SHA-256 788f2ac256d243b1…

MALICIOUS

PDF

68.1 KB Created: 2020-12-20 08:07:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9eb7e3647d13b04fc6fc6a0105964757 SHA-1: 9a942f5a2b90be02610b107fb19b6b61f2727075 SHA-256: 788f2ac256d243b190cb4113d33d2ff285efff8cbbb240b2329ccc46e1c067b2
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ggtraff.ru/aws?utm_term=acop+sss+form+2018'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/aws?utm_term=acop+sss+form+2018 In PDF document text
    • https://tolawururajetam.weebly.com/uploads/1/3/4/8/134883146/lidewid.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/panokojol/kojojotimokixisinubeputaz.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/challan_form_for_migration_certificate_fbise.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2c445b7bc966055df433/t/5fddbd8491828d0f5d3586d5/1608367502056/brahman_hd_video_song_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51312bd14ff0dd2b785be/t/5fcf2c8424ae147ef3d8179a/1607412871454/nenapidudefipuduv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf095d9f4d5d21a5f1cf4a/t/5fd6c1573ebe0416316ea44a/1607909720633/grieg_seafood_annual_report_2016.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe273061e25426e1028b04/1606297393305/fetolenenijubijez.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/67417105507.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fd9af9866f3fd2d4d777/t/5fcf514155629615614fc71c/1607422273954/varovumididi.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/bendera_merah_putih_gif.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/spotify_app_download_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd525e5b7bc966055e3a6f/t/5fde27c92629b066abacfa01/1608394699528/best_wallpapers_for_android_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/xijonakined.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/internship_final_report_sample_uitm.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_off0000cd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD80 5428 bytes
SHA-256: 8fc9cf33bd65f7d8c1a5d33ee9c07f0c40626b346711c26232de19a4c8674817
font_01_sfnt_off0000dff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF5 10456 bytes
SHA-256: 8d409e3a2a9e3cf5ceeca25d5c369cff1d6c19eed9241a00dd37ba1627793aaa

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