Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3431e093a951733…

MALICIOUS

PDF

78.2 KB Created: 2021-04-24 23:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f246a0f5ad37268a99938b30e7f468cd SHA-1: 2752837273b37a49dda20436b76eda9877be2a55 SHA-256: d3431e093a95173346bf886ddebb45e5a40313e75adc22e039a8fdb541073dfd
126 Risk Score

Malware Insights

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

The PDF file contains numerous external URIs, many of which point to disposable hosting and are likely part of a link farm. One prominent URL, 'https://ponafet.ru/strik?utm_term=how+to+scan+a+document+canon', suggests a phishing or scam attempt by mimicking a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/strik?utm_term=how+to+scan+a+document+canon
    • http://logvoz.ru/xemamupowanixupisijemades2j5q7.pdf
    • http://bebalezuve.medianewsonline.com/julideg.pdf
    • http://majovevalaji.sportsontheweb.net/rodide.pdf
    • http://srakan.space/takeout_restaurants_open_near_me_right_nowyb306.pdf
    • http://expressday.online/how_does_mockingjay_part_1_endvq3ja.pdf
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/batibuke_bebajerew_refesavetuliwa_mapiviwejaxaku.pdf
    • http://pribor-poverka.site/local_area_network_diagramwwk6f.pdf
    • http://bluebadgeform.com/66072420311yp2fc.pdf
    • http://instapodarok365.site/884552397205gxiq.pdf
    • https://viduturuv.weebly.com/uploads/1/3/6/0/136082320/fef99c37b236bab.pdf
    • https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/debibolase_sabezepu.pdf
    • http://mrshadow.net/why_is_my_irobot_not_workingxufcn.pdf
    • http://dfwshootersupply.com/89933881433nkqer.pdf
    • https://pulatufulufu.weebly.com/uploads/1/3/4/6/134610330/35bee1d.pdf
    • http://letxxnx.org/87432155579xcg4b.pdf
    • https://jopulovi.weebly.com/uploads/1/3/4/2/134265775/bf9c9.pdf
    • http://jojidasusesot.sportsontheweb.net/44302621960.pdf
    • http://bibopasaxuvibu.mypressonline.com/can_you_put_windows_os_on_a_chromebook.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/3966d396-aeee-4de1-9243-f6396cf6b43d/bubemugagiga.pdf
    • https://uploads.strikinglycdn.com/files/a4ae9f60-4c4f-4bcb-89c0-5f29074cb226/grade_9_vocabulary_test.pdf
    • https://uploads.strikinglycdn.com/files/f3be7283-108f-474d-84fc-386c6cc7eb37/tunalevegonud.pdf
    • http://fovawipemezipu.myartsonline.com/japanese_word_list.pdf
    • https://uploads.strikinglycdn.com/files/3d76087c-9b7a-4dc8-aae1-3ca429519e35/lexus_ls_460_for_sale_craigslist.pdf
    • http://fixidil.atwebpages.com/english_adjectives_list_with_meaning.pdf
    • https://uploads.strikinglycdn.com/files/4c39aa54-d797-4ef1-94d5-5ab6ebc4edfb/asus_dsl-ac68u_review.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e957.bin
11b56b1b85e5b4d9cd75d33f2331cb88b7dc42ca1da165b3fa439435db787909		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE957 4844 bytes
font_01_sfnt_off0000f9bb.bin
eed3037f96ca801acaa82b4885a406efb128ea2dddbc03cd2cafaccde24c6081		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BB 10308 bytes
font_02_sfnt_off00011d16.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D16 4324 bytes

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