Malicious PDF — malware analysis report

Static analysis result for SHA-256 e197506e7d1ae2b0…

MALICIOUS

PDF

87.6 KB Created: 2021-04-15 00:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f4adc711cf33beec84b27d4224881273 SHA-1: dcd9c508297a73aff5a9e0d8c474173286e68c43 SHA-256: e197506e7d1ae2b0d398ff3dc5e0f914697dd06df244bc2ea6bddb849a68660a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document was flagged by multiple heuristics, including ML and ClamAV, as malicious phishing content. The embedded URL, https://nipisod.ru/strik?utm_term=welding+basics+for+beginners, is identified as an SEO redirector designed for phishing, disguised as a free download. No scripts were extracted, but the overall structure and URL indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://nipisod.ru/strik?utm_term=welding+basics+for+beginners PDF link annotation
    • http://xekumaluvox.iblogger.org/86417824148.pdfIn PDF document text
    • http://xuratalusat.22web.org/cuanto_es_250_gramos_de_manteca_en_tazas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/what_paperwork_do_i_need_to_buy_a_used_car_privately.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/brene_brown_ted_talk_the_power_of_vulnerability_transcript.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/moniciones_domingo_xxii_tiempo_ordinario_ciclo_c.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/menisasogeveriruv.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/ewg_laundry_detergent_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a180f9e9-351c-4342-a1b5-0db7cb8caae7/pachislo_slot_machine_model_7777_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/comentario_biblico_adventista_exodo_33.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/susilox.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/the_x_files_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/19888186378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64529212-59d3-4ea2-bbbe-50f52bf5f434/62412980306.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/expression_web_4_html5_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/how_to_swiffer_wet_jet_pads.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/wasegasolib.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/download_hp_laserjet_p4015n_driver_windows_7_32_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8d2081d-1c65-4b53-89af-d4b388078258/walt_disney_world_meal_plan_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/basic_life_skills_worksheets_for_adults.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAA 5052 bytes
SHA-256: c69b298f6dafd25bcf263de36823cca039de8b3d65623931f8f55b64547625ec
font_01_sfnt_off00011cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD9 11388 bytes
SHA-256: b9488a00eb12a3694a380e3e77dc3798a4bbf7314a2ddc6582f434d2f55cd81d
font_02_sfnt_off00014342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14342 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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