Malicious PDF — malware analysis report

Static analysis result for SHA-256 0efb6f7afcc9a942…

MALICIOUS

PDF

88.5 KB Created: 2021-03-20 08:14:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 35f7beb10b49c9dd66cf26b66c9ecedc SHA-1: c151f47cf76500d73d7488ec98afbce0acd32994 SHA-256: 0efb6f7afcc9a94270e574ca70b7b38bfc740abe6209041443bd10ea4eb011b0
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to 'ponafet.ru', suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of generated links, further supporting this. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious intent. No scripts were extracted, but the document's structure and linked URLs are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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.
  • 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/award?keyword=pwc+annual+report+pdf PDF link annotation
    • http://dreabling.online/jaxigeduqli1u.pdfIn PDF document text
    • http://cloudmarket.website/zatitabonojuradixekeliay6p9.pdfIn PDF document text
    • https://gibolavisijubaz.weebly.com/uploads/1/3/0/8/130813033/d05ee3dd2118.pdfIn PDF document text
    • https://romubavopu.weebly.com/uploads/1/3/4/8/134884942/bawidixi_xifeketepexumob.pdfIn PDF document text
    • http://woodbonus.net/40607076475pssxr.pdfIn PDF document text
    • http://instapriz.website/boot_camp_6_windows_10m2sbx.pdfIn PDF document text
    • https://mufudenufasos.weebly.com/uploads/1/3/4/4/134492520/5557151.pdfIn PDF document text
    • http://fbdirect.site/71431310960c4bq5.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/31af4065-b645-40a2-b646-858dab44d704/how_to_become_a_certified_medical_interpreter_in_california.pdfIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_23ccad3195de4983877a4891ceaad56a.pdf?index=trueIn PDF document text
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_eed747cca817402e860211836765425b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/zogiwivoraboxejagul.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/todivafufavejoxijawir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6fe091f-3823-4653-9862-9a173ef9a121/jump_force_dlc_2_jojo.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/17787986141.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/anthem_cataclysm_puzzle_guide.pdfIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_fa566103072343a086f9c88ae341e783.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cec8094-e370-458b-b76e-9391c4044ca3/18457399836.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/disney_the_lion_king_full_movie_in_hindi_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/free_warranty_deed_form_georgia.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/taurus_pt111_g2_sight_removal.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/71502626089.pdfIn PDF document text
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_b24f30a4a8dd403c919990985d542caf.pdf?index=trueIn 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_off00011e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E4B 5064 bytes
SHA-256: e8c7ac6a446e662407e739ecf9c0bffbd08503beb09ed0edcd8193a4cb4c8549
font_01_sfnt_off00012fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FAC 10864 bytes
SHA-256: 2d47e7d47742f8eff40e99070cc7a56a08a9170f8120d95034cc77dcabf68fa3

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