Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc97ded7478d705…

MALICIOUS

PDF

71.2 KB Created: 2021-01-13 18:50:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0a1d10764d5121e6f3ac1055ef83cdef SHA-1: 96c675e08c6a847dc289f79232d60b38c07bc8ad SHA-256: fbc97ded7478d7058fab3c46d32c766995f877213c6a0afe9ad8f6012ebc4f73
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to an 'accident reporting center'. The presence of multiple PDF links and a critical ClamAV detection indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=accident+reporting+center+sudbury In PDF document text
    • https://cdn.sqhk.co/mewedenemez/cySmgir/how_to_decorate_a_cake_with_buttercream_icing.pdfIn PDF document text
    • https://cdn.sqhk.co/togobetof/jjgdicI/2d_mini_golf_game.pdfIn PDF document text
    • https://cdn.sqhk.co/kurinunuwor/hdGjfTp/janopumez.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/vbgc8hg/blue_cross_blue_shield_of_illinois_provider_finder.pdfIn PDF document text
    • https://rokozozo.weebly.com/uploads/1/3/4/4/134498035/wadowomukoz_lapekot.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/hXhjgf4/animal_sounds_song_spanish.pdfIn PDF document text
    • https://mipejefote.weebly.com/uploads/1/3/4/3/134356111/xolasasabonagepolod.pdfIn PDF document text
    • https://xaforegitada.weebly.com/uploads/1/3/1/4/131413040/6136175.pdfIn PDF document text
    • https://site-1217489.mozfiles.com/files/1217489/50477041744.pdfIn PDF document text
    • https://cdn.sqhk.co/sigagegijej/ie0tifd/wood_cutting_boards.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/kasuwevovog/aprendizaje_activo_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/sosuzuzewuwavifiwejokigis.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_off0000da08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA08 5232 bytes
SHA-256: c96dcb4d1d124764755b4f29dc93ae01f35f1bb4ca9db45690dc4841de32d835
font_01_sfnt_off0000ebec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEC 10604 bytes
SHA-256: 7a90d0474a23d28bb3752d7c2feb8cebf7367a39d1c59dcc006c5b3384952cfd

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