Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf9df601eb8f7d8f…

MALICIOUS

PDF

75.2 KB Created: 2021-03-19 22:48:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 8693eefb5665a67234391d0a104ca49f SHA-1: b153bc27a1a8816d7ba62db09be33c8110cf584d SHA-256: cf9df601eb8f7d8ffee4bf3a7ba3f7565f042cfdcfe1fe1d1c39e824ed4bbce3
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a URL advertising a movie, a common lure for phishing or malware downloads. Heuristics indicate the PDF is malicious and links to known redirector infrastructure. No scripts were extracted from this sample, but the overall structure and linked content suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://crophysi.ru/123?utm_term=hitman+agent+47+2+full+movie In PDF document text
    • http://worameruvejaka.mywebcommunity.org/tuxesatetenikazenevibusuz.pdfIn PDF document text
    • https://cdn.sqhk.co/busoleva/0IOQZCB/color_me_happy_shampoo.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/i6JJvSZ/3d_pinball_space_cadet_online_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388041/normal_60545df002eee.pdfIn PDF document text
    • https://cdn.sqhk.co/medujebukoma/Rshfijv/f18_carrier_landing_game_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404983/normal_5fd12493202db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476140/normal_5fe15232d41a1.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/6eca49aa-707a-43d1-9925-aeb251050d10/how_much_does_it_cost_to_renew_ma_drivers_license_in_illinois.pdfIn PDF document text
    • http://wipadafefuxasi.onlinewebshop.net/5015748450.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd451fd6-0954-44a8-a161-01e52f0b6288/91464355294.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49b9409d-027f-41d4-9548-3dd9dee1d1a2/14490910343.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6e0c33b-3449-4f33-a813-f16fa7d5f867/cyber_security_by_nina_godbole_ebook_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a43fdf14-a5ec-4865-a2f2-c0a027365b15/movibejufumisepadosafe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/384b42e7-f74b-4dbc-85df-e689717ac031/what_channel_is_newsmax_on_altice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02a64aba-90ac-4113-9135-6c3a60f946bd/mens_strength_training_program_for_weight_loss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee36199f-8bb4-4bdb-8fa4-95ac6615edc4/xotuxipis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd3213d-616a-4e6c-8f3c-6bab28ccca61/1264181435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ebf4140-d5e0-453d-b1b4-9cf8f528ba07/jovujifatunasosugepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9de80ba-1237-4460-9138-bc3c6fd0bcd0/breville_duo-temp_pro_bes810_espresso_machine_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/209cba1a-0342-40bb-bfd9-376e0bccef46/iphone_5c_price_in_nigeria_slot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8809f725-1f51-4ac7-bd92-39cb2ae57dd0/pedajerawiromedinoxopasa.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/asterix_and_the_vikings.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_off0000dfbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBD 5132 bytes
SHA-256: e52cf6e2a0b3c1dc728057f8b02bbbfa1c8dd27b45c8ea44b32884e4c7b8dc52
font_01_sfnt_off0000f142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF142 18372 bytes
SHA-256: a2a8136adc75ef95c2faf408a03115c33d67bae5c84aa5d13c06fbe78e846d39