Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29ba1c25191c7ff…

MALICIOUS

PDF

109.7 KB Created: 2021-03-31 18:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 489b14a8264483e8b19e5185d8980da9 SHA-1: 8aa3413395c74470fcb573f206b4629ecabcd6aa SHA-256: d29ba1c25191c7ff329a5aa398bd427cd6a8d9769024b656018f31babc6a898b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xezojetit.ru/award?keyword=catechism+of+lucifer+pdf PDF link annotation
    • http://reetodo.online/shah_abdul_karim_song_freerb3rn.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/axis_bank_net_banking_form.pdfIn PDF document text
    • https://cdn.sqhk.co/goworonol/gehidjf/2d_vector_animation_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/gj1AGVt/best_paranormal_romance_books_on_kindle_unlimited.pdfIn PDF document text
    • http://jakufodunod.getenjoyment.net/37234340836.pdfIn PDF document text
    • http://ninomut.sportsontheweb.net/edema_agudo_pulmonar_neurogenico.pdfIn PDF document text
    • http://50offshop.pro/spectrobes_beyond_the_portals_cardsx72ud.pdfIn PDF document text
    • http://zuduwamani.mypressonline.com/how_to_hide_adjustable_bed_base.pdfIn PDF document text
    • http://tafugegajotu.mygamesonline.org/how_to_connect_kirkland_hearing_aids_to_iphone.pdfIn PDF document text
    • http://skidki-day.shop/what_does_effective_communication_mean_in_business_terms7g7d0.pdfIn PDF document text
    • http://tamakar.xyz/quotes_from_tao_of_pooh9vqfw.pdfIn PDF document text
    • http://modarab.mygamesonline.org/diabetes_alloxan.pdfIn PDF document text
    • http://galufixagomedo.getenjoyment.net/captain_america_comics_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f31baec5-f2e8-48e9-9651-39a6d54e32c1/88393893889.pdfIn PDF document text
    • http://japamitafixe.myartsonline.com/61063287314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c69d11cb-abc5-4d24-b923-e642a1765d77/sanokuxujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38eea940-3f82-4daa-9f45-d726cc0aa490/mobiwezizugutati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aad0a096-8139-40d5-8aaf-0df7bdc43c12/grohe_kitchen_tap_cartridge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f88d14d0-6047-455e-ab3f-a56af477a3b2/what_are_the_primary_objectives_of_auditing.pdfIn PDF document text
    • http://kusababi.onlinewebshop.net/pomezixonuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a848750-e65f-4c30-811d-986351719879/folan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a531f0-f0e0-4e63-af7b-76cb74018b31/61768964420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0218a097-21dc-410e-a6af-a82b3f84bead/gonilawurixezudojutu.pdfIn PDF document text
    • http://resilasijajatil.myartsonline.com/talk_like_ted_carmine_gallo_download.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_off00015fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FE6 5300 bytes
SHA-256: 62e09a1471b2f0837a07f0336b8d720112f4b6732a998650ab6eef12db6315fd
font_01_sfnt_off000171c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171C0 19588 bytes
SHA-256: 9350088bf31e948f490fc4e648d606364b806d7adc81582e196f90d423acccfe

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