Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e51ca1ab159b0f…

MALICIOUS

PDF

78.2 KB Created: 2021-03-17 06:03:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 06e707a77376d59c09fbc772a183f7ec SHA-1: 00900880529da64b1b06bb2368a72e49fe769b5a SHA-256: 07e51ca1ab159b0f12fbaef6d9b4cc07f22f09b3e3a391732e668f2f422d4bd6
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs point to suspicious domains, further supporting this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=shopping+empire+2+hacked+unblocked PDF link annotation
    • https://soxapibojewaw.weebly.com/uploads/1/3/5/3/135345372/6911492.pdfIn PDF document text
    • https://fukaxoxatu.weebly.com/uploads/1/3/1/4/131438517/nisufol.pdfIn PDF document text
    • http://smeh-mif.space/zebra_gk420t_reset_ip8v423.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/84116806023xavpe.pdfIn PDF document text
    • http://my-favshopg.online/maluma_cuatro_babys_mp3_downloadtpopq.pdfIn PDF document text
    • http://devgm.design/20140222179i77vg.pdfIn PDF document text
    • http://1xbets-reg.site/battlestar_galactica_season_1_kickass5h8sc.pdfIn PDF document text
    • https://denutuzuno.weebly.com/uploads/1/3/4/7/134706868/4110305.pdfIn PDF document text
    • http://taptopbot.com/xilabixitakexiw023i7.pdfIn PDF document text
    • http://telgrm.site/how_to_ask_for_a_reference_letter_exampletj7ua.pdfIn PDF document text
    • https://limavewudadeku.weebly.com/uploads/1/3/5/3/135323498/kadeviwo.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/855c93b6-e4df-4bd6-a9f6-4701a298e484/42210595139.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7e57d54-1b88-44cb-92fb-a37a0bcbdbd0/47582894232.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/pathala_bhairavi_tamil_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/chlorine_twenty_one_pilots_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/jesuit_oath_catholic_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26395e6e-0e3e-46c6-b697-72744c014816/21104227550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b8ab6dc-f6f9-4566-b562-0f4ae1766a4c/ruduru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/220eeadb-693c-4ce0-b768-4bf5d7629b2d/lart_de_la_guerre_sun_tzu_fnac.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/sheet_column_in_excel_2010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e1220b7-afd0-4aa6-9b2b-df3c56334dc5/57743388840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/675a2152-60ca-4a02-8c33-2cb7f9d9fb78/fexuduroluwatagulu.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_off0000f03b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03B 5748 bytes
SHA-256: 952a6336773ec9b0e4dc55c5b7f7e7b842fef584bd229773d1af75aa3673e193
font_01_sfnt_off0001039c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039C 11956 bytes
SHA-256: 8511c3166ca30fb72f88a80f8e38a1fea5db999a2e00af21a578a3cb266c7fd3

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