Malicious PDF — malware analysis report

Static analysis result for SHA-256 001dee6bd61ae010…

MALICIOUS

PDF

81.0 KB Created: 2021-03-12 04:02:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 8c97b1fab170b48a9b45aa1a93b6edd0 SHA-1: 5222b02cf21720b16b6c3d5426c36e01fe20f6c3 SHA-256: 001dee6bd61ae010b93bf3df18365d871297d16afb8f2d558629c867a2867b94
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to disposable domains, indicating a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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 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/123?utm_term=anbe+sivam+full+movie++in+tamilrockers PDF link annotation
    • http://mebelintera.ru/division_table_1-100eab55.pdfIn PDF document text
    • https://cdn.sqhk.co/vekosozob/Gihibgc/vogemukenidunaramaketinek.pdfIn PDF document text
    • http://derilezin.sportsontheweb.net/bagolezefafuro.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/ihc2jja/sowodiwi.pdfIn PDF document text
    • https://cdn.sqhk.co/xivomojuf/3icghje/vededub.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/7jfiSJv/3689087761.pdfIn PDF document text
    • http://theharaka.online/beats_studio_wireless_not_workingtmomg.pdfIn PDF document text
    • http://rusherx.studio/canon_mg2200_scanner_software5d1vu.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/31535081523.pdfIn PDF document text
    • http://loneresel.mygamesonline.org/21623238675.pdfIn PDF document text
    • https://cdn.sqhk.co/womalakifaxa/xrgckgj/vurenanaxeraxozij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://02664c88-84e5-42fa-aae3-682d3a0d4328.filesusr.com/ugd/39d081_43803bf8e21a4a579e95d9fd88ddc534.pdf?index=trueIn PDF document text
    • https://c3373aeb-ed74-4f2d-b631-fa679e0a3f6f.filesusr.com/ugd/cbe7f7_b055d2284dd54064bdc88d01123ad8dc.pdf?index=trueIn PDF document text
    • https://03dfb0eb-7fe6-4188-ad87-ea2b88df7b19.filesusr.com/ugd/f967ac_8425429aa8eb4aa6891f8400ab2ad67d.pdf?index=trueIn PDF document text
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_aab61ce072ff461e95a852cf38eaa77e.pdf?index=trueIn PDF document text
    • https://29ce6865-365c-47c4-9f0a-635d6f965865.filesusr.com/ugd/0d6b77_00b9406109f24ba7babf27f96bc743e1.pdf?index=trueIn PDF document text
    • http://kudogal.rf.gd/nipulaloxodibesomolev.pdfIn PDF document text
    • https://a8fdb364-3865-4521-a36b-e12f4de7752f.filesusr.com/ugd/e20637_31d33c9f9a38439f92f638ecba73ce72.pdf?index=trueIn PDF document text
    • https://234a0c07-d908-4261-bb83-16b3c96a9b04.filesusr.com/ugd/73e0e6_fe90f3e3fb114eb18e5a9da380c912a2.pdf?index=trueIn PDF document text
    • https://47e244ab-6b1f-4ae7-97e8-86de5b619f9f.filesusr.com/ugd/e1d12c_582d759333e24bb893c3ef6149049b3d.pdf?index=trueIn PDF document text
    • https://9e2b3e3a-6a02-4d3b-8ba9-5acc01041672.filesusr.com/ugd/66c878_0463b15f9863428c92d01d7bd8939883.pdf?index=trueIn PDF document text
    • http://lakobomupixa.epizy.com/free_pumpkin_carving_stencils.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0B 5280 bytes
SHA-256: 180bfd802b64ef1a690fca7e5060f4d8ee793842ca20deaf323d689684e740f1
font_01_sfnt_off0000edef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEF 4656 bytes
SHA-256: 390ebf254038d89bdb55bdd1f5fa68da842e5f7fd7d1ad8a63970bc29df988ce
font_02_sfnt_off0000fd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD06 10212 bytes
SHA-256: 9e6d3333616a214daa5f5d392bb23ef7352dc471ce6804055c4d873cfaf83139
font_03_sfnt_off00012045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12045 16164 bytes
SHA-256: 4bd16c8abd39118228c1571b0005d4eb3b3e943e572fd92a2a80cfcb7b749349

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