Malicious PDF — malware analysis report

Static analysis result for SHA-256 c88fdf44ce39c6a6…

MALICIOUS

PDF

67.0 KB Created: 2021-03-03 08:02:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 19639e1eb984311afcc4b71cd0e726ce SHA-1: b1f4202eef6fc5549cb6ae9dd83815cb184d6b49 SHA-256: c88fdf44ce39c6a6a0159e39c116291e0aaae47d3336d64d10074d6ae077b233
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/award?keyword=how+to+wash+peg+perego+primo+viaggio PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450003/normal_5ffdd5ed79b4f.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/cjjChf4/98619653175.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404122/normal_6030f4cdd6b60.pdfIn PDF document text
    • http://sexugaweguko.iblogger.org/zoralowofazis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420761/normal_6009cb9812b2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_603f154087ed0.pdfIn PDF document text
    • http://xamujatawixix.22web.org/84374469226.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464707/normal_6007ede797ecd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kevakop.epizy.com/when_will_harry_potter_book_5_illustrated_come_out.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/auto_format_dialog_box.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/pobekobeka.pdfIn PDF document text
    • http://daxararudivoxik.rf.gd/introduce_yourself_answer_example.pdfIn PDF document text
    • http://duwimufowewis.epizy.com/vintage_decorative_frames_vector_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/can_evening_primrose_induce_labor.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/514360157.pdfIn PDF document text
    • http://zevofelajasuz.epizy.com/41999306245.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/bigg_boss_telugu_songs.pdfIn PDF document text
    • http://mojogisi.epizy.com/93454940282.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_off0000cb0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0B 5312 bytes
SHA-256: 9c6fcbcec843c9b08a15cfa104d28abde7ac6f766268d43e47a7615ce7640d9d
font_01_sfnt_off0000dd0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0E 9936 bytes
SHA-256: 0eb941d1c0b47a355d8d2fb4a65f59bc07995175a271377451aaa7266d594863