Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ffcee7bf1df5e0…

MALICIOUS

PDF

72.2 KB Created: 2021-01-14 22:51:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c00d496facbf574cf13d561474703095 SHA-1: 7cabdffa95bc1369d4ed9fe9892be6fbb37c686b SHA-256: 07ffcee7bf1df5e054622c5d520d8e33c4ed5ef1b7b0f1700896f051e77c464e
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://cctraff.ru/wb?keyword=jolt%20360%20app'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/wb?keyword=jolt%20360%20app In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xapota/probationary_firefighter_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/32612572673.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/37774385383.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/xumebuxarikajin.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/north_china_edmonds.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/brush_lettering_practice.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/89157070282.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/gonimijosuwariked.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/barong_family_album_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/81767151169.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/hotel_transylvania_2_full_movie_english_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/scrabble_game_for_ipad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d27c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD27C 4504 bytes
SHA-256: 7fb9ecdd74a0cb9ea48156f0dec6348822caf9cc43d9551f323a79ce74ccc419
font_01_sfnt_off0000e1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C1 10628 bytes
SHA-256: 88c248f4886369c03f4f30ad6e4efc363ad1d2ee730f165eb586e1fee76e4ed0
font_02_sfnt_off0001063c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063C 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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