Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6fe74770dbb445b…

MALICIOUS

PDF

72.6 KB Created: 2021-06-09 07:19:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2ee80f860b3d6338950806ee91831c15 SHA-1: cf17c72d544df4f1d30900042e1d1bc4a149e762 SHA-256: c6fe74770dbb445bd32bc06638e676c2fd32201385468fe8c564994a69e3b49e
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which are hosted on disposable domains, suggesting a link farm or phishing operation. The embedded document text, though garbled, appears to be related to search terms, further supporting the phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://philabc.ru/pbw?utm_term=hate+story+iv+full+movie+watch+online PDF link annotation
    • https://kamukijupekud.weebly.com/uploads/1/3/3/9/133997827/nofagidiwasibenojidi.pdfIn PDF document text
    • https://zopiwaseka.weebly.com/uploads/1/3/0/9/130969839/b26d2c4e3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382421/normal_6008957cbb4fd.pdfIn PDF document text
    • https://xepebujusu.weebly.com/uploads/1/3/4/3/134319702/f8e9ab5b65312d.pdfIn PDF document text
    • https://gozisali.weebly.com/uploads/1/3/4/6/134670052/6bfd0e12d2f3.pdfIn PDF document text
    • https://nogikukejigili.weebly.com/uploads/1/3/0/8/130873965/1820964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470014/normal_601edc14e8394.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_602a49f2af034.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412415/normal_6012a4691efc7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xojipoxar.pbworks.com/w/file/fetch/144628299/how_do_i_turn_on_my_wireless_keyboard_850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95cb4ecc-ac85-446e-ba89-a237fa672a16/aurora_3d_animation_maker_full_version_free_download_with_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e257074-4582-447c-b96c-f4ba3c94ab6b/66726068007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c194cfd-6a52-4aea-8aa7-46649928385b/vatican_assassins_en_espaol_gratis.pdfIn PDF document text
    • http://pajawazo.pbworks.com/w/file/fetch/144897828/how_to_use_alexa_as_a_bluetooth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5defc382-0db6-49c5-a335-907732c02386/10900898659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3231c8ba-5844-495e-9c9a-3de753e12373/percy_jackson_and_the_last_olympian_graphic_novel_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/067fe5b9-f98e-4df8-9023-0c48f461cd87/national_game_of_canada_lacrosse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7029a867-4ccc-4a8b-88f3-96ca08bb929e/xbox_360_wireless_controller_battery_pack_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/783f4abe-b5c6-45b7-80dc-8f15f16fc71b/voperoledoguv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec615e00-dfb0-4635-93da-dd36618bd500/most_common_french_words_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eebc05a-528c-48bb-b474-ac0e787c6bf5/tufofenirodamuborewep.pdfIn PDF document text
    • http://fijovolumi.pbworks.com/w/file/fetch/144836070/bhola_hai_bhandari_ringtone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75056600-50dd-4ace-ae57-b6794906826f/11490218081.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_off0000defa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFA 5336 bytes
SHA-256: 3132c09845c3aac1ca893047b54f064af7c89389a9b5a46e54ec6b0844626586
font_01_sfnt_off0000f110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF110 10536 bytes
SHA-256: 469574dd91c09b81c76f6981172049d60c1403815533038e369ed906fee1c4d4