Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d18c9bdddc0b5d3…

MALICIOUS

PDF

77.0 KB Created: 2021-03-21 02:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d0e82d94f32628d225cc01d7125c7c45 SHA-1: b17b77a5a0e884d50ddc6fcb80242607471e41f8 SHA-256: 9d18c9bdddc0b5d3e501b746d3436b6625ca6111bec1800ca4ea72a4277f2bfa
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, with a primary suspicious URL pointing to 'dugedepap.ru'. Heuristics indicate the PDF is a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=how+to+write+a+literature+review+fast PDF link annotation
    • https://cdn.sqhk.co/rolileduvof/ibPicql/space_wallpapers_phone.pdfIn PDF document text
    • http://armada.technology/pijufaahky.pdfIn PDF document text
    • http://xixokuwisasij.22web.org/free_eviction_notice_template_tennessee.pdfIn PDF document text
    • http://gedobitubojufu.iblogger.org/cardiology_an_illustrated_textbook_free_download.pdfIn PDF document text
    • http://agent-ritual495.online/31747586980nupoj.pdfIn PDF document text
    • http://fc-aromat.ru/best_battery_monitor_app_android5k9cl.pdfIn PDF document text
    • http://55571.ru/ingersoll_rand_model_ssr-ep1004jlrv.pdfIn PDF document text
    • https://cdn.sqhk.co/mivuxakadu/wmhbeH2/11908435407.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/lhc49ge/32512521075.pdfIn PDF document text
    • https://cdn.sqhk.co/kedetofido/3vjagcT/39267281030.pdfIn PDF document text
    • https://cdn.sqhk.co/menasimax/SDhbhaz/do_angel_fish_give_live_birth.pdfIn PDF document text
    • https://cdn.sqhk.co/jisanipu/hhmghcr/the_killbox_apk.pdfIn PDF document text
    • http://jobs-ingenieur.best/46661600848rv7lt.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/227b11c5-aad8-4f60-9739-35c22b30a52f/is_there_an_it_chapter_2_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/453170ce-5a82-414e-ba69-03620c9426a3/how_much_do_divorce_lawyers_make_in_los_angeles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92532fab-f5bf-4661-9790-0dfa84881ba1/18680593386.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9145105-c58e-4b78-9db3-1a03b3c4071e/pentair_superflo_variable_speed_pump_programming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/225ee520-4596-4866-829a-cfb6c1583dc4/bifikozoxapesuvufe.pdfIn PDF document text
    • http://kagapari.rf.gd/61242349480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02419846-62f8-44a3-8d4b-fdfccfa70c67/kenmore_washer_dryer_combo_repair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea846daa-1b6f-49ad-b895-855016af88eb/how_do_i_know_when_my_awei_bluetooth_headset_is_fully_charged.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/807e3aac-6bba-4e4a-a0f8-d27113bc25d2/how_to_find_compound_interest_rate_in_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ad12d3a-b101-430c-82e5-3bfd0b2f5b84/i_am_a_singer_china_2017_ep_2_eng_sub.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_off0000f113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF113 4872 bytes
SHA-256: b19aa532d8cfa34562659247fa9d18216967f903b5edae4d1dd0fc43f20708d9
font_01_sfnt_off000101cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CB 10628 bytes
SHA-256: 7bbd637bd228d01fc3414098d4ef342b561b254f17ac3986e81f9c5fe1798f3e

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