Malicious PDF — malware analysis report

Static analysis result for SHA-256 e753a07d80a46340…

MALICIOUS

PDF

70.9 KB Created: 2021-03-14 10:27:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e5ef5a23916162ef657875bad938e85b SHA-1: 62beb3b995d50aea3b88225385da9e3b7fc4aec3 SHA-256: e753a07d80a4634036892576b2bf40c171dfa925d422d0fcb39061e97e8797f7
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://dafemum.ru/wix?keyword=richard+townsend+richardson In PDF document text
    • https://cdn.sqhk.co/dibirolinu/ibZHAhj/jimmy_john_s_frenchie_sandwich_calories.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/jjJgdgi/turn_on_auto_reply_outlook_365.pdfIn PDF document text
    • https://vumukawa.weebly.com/uploads/1/3/4/6/134662430/dafupuk.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/gjjgN7U/car_games_cartoon_mini_racing.pdfIn PDF document text
    • https://cdn.sqhk.co/givesaxi/ihpkjjE/telepigorumowinepowa.pdfIn PDF document text
    • https://xajerunufunofe.weebly.com/uploads/1/3/1/3/131378991/1091865.pdfIn PDF document text
    • https://wosowabo.weebly.com/uploads/1/3/4/3/134340570/7016361.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/jAjaigL/kumal.pdfIn PDF document text
    • https://cdn.sqhk.co/vimerokil/4iebhaf/hyrule_warriors_age_of_calamity_confirmed_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/jjdiaZW/hd_wallpapers_for_windows_10_laptop_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zubixola/h41fial/snowden_2016_full_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/nodezaneripe/dvAhbjb/fupenavajonanaripibo.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/b883704c-f0fc-4504-9219-9a84dd7d668c/is_indian_tribal_income_taxable.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/bhoomi_tamil_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9c9d1d3-7524-4bb5-add4-e27f7010d65e/42799986476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acf2ae58-1b51-46d3-b207-1808e5fcb39a/double_down_kfc_nutrition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94648b88-a335-4222-b8f6-480bd46cab4e/food_safety_auditor_jobs_arizona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff677702-fc10-4452-b12b-c408f5e796f8/lexus_rx_350_f_sport_review_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5598f9b9-48c5-4937-b794-0cd5356ac79a/18984105802.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de840f88-90ab-4121-8f47-b3fd92ef8971/lijugovibikigadup.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/parabody_ex350_replacement_cable.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/acana_grasslands_dog_food_feeding_guide.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_off0000d8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D9 5092 bytes
SHA-256: b8ed2d6368b0db7a0365fbda375e4e3438125ba04e9ba25e3d0f1ccdeb3c6b63
font_01_sfnt_off0000ea39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA39 10700 bytes
SHA-256: bde8aaf2ea5abea74abfdc73915d03c3bd8bf3c2ef5f87464c92700d65f2882f