Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a826fa6dbe57a79…

MALICIOUS

PDF

69.2 KB Created: 2021-01-22 23:31:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9339ac9707652066e38fac056f69d1e7 SHA-1: 95e034bddce8d5562929779a5835514c231a1d0f SHA-256: 9a826fa6dbe57a790c98bc6be659e961c9460c2169e2d4000f2c218af17457b8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to known malicious infrastructure, identified by multiple heuristics as a malicious redirector and a phishing lure. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL used in the lure.

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
  • 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.
  • 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.
  • 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://traffine.ru/aws?utm_term=platform+pumps+peep+toe In PDF document text
    • https://site-1177476.mozfiles.com/files/1177476/shooting_bubbles_games_free_downloads.pdfIn PDF document text
    • https://site-1178192.mozfiles.com/files/1178192/patuwur.pdfIn PDF document text
    • https://site-1196822.mozfiles.com/files/1196822/answer_to_4_pic_1_word_7_letters.pdfIn PDF document text
    • http://pepirizibizedel.22web.org/49504918991.pdfIn PDF document text
    • https://site-1175725.mozfiles.com/files/1175725/kicks_kung_fu_movies_2018.pdfIn PDF document text
    • https://site-1168003.mozfiles.com/files/1168003/theeran_movie_songs_isaimini.pdfIn PDF document text
    • https://site-1175456.mozfiles.com/files/1175456/crossword_puzzle_books_near_me.pdfIn PDF document text
    • https://site-1246605.mozfiles.com/files/1246605/septic_shock_antibiotic_treatment_guidelines.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/bejenosugede/damubupipadevinobamobo.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/avatar_o_filme_completo_dublado.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/king_size_platform_bed_with_storage_white.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/aviation_safety_and_security.pdfIn PDF document text
    • http://fidazel.epizy.com/76337871735.pdfIn PDF document text
    • http://litezopufesox.epizy.com/full_form_of_iqc.pdfIn PDF document text
    • http://gagutaxu.rf.gd/466427959.pdfIn PDF document text
    • http://wabelat.epizy.com/women_s_booties_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/bomberman_game_free_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/coldplay_yellow_piano_sheet_music.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF47 5048 bytes
SHA-256: 80b6d3de81a269e948b61bdfb6c61e89f1771a9a0aad5da344e243bfcf1376d2
font_01_sfnt_off0000e05d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05D 13684 bytes
SHA-256: 0107ea22c56051c3d54bc9be5c90fb81d10acde5a89b81468899d5261c742990

Open this report in the interactive analyzer, or submit your own file for analysis.