Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad65377eca8de70…

MALICIOUS

PDF

82.8 KB Created: 2021-03-21 06:59:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 071ceb185130200f6d6740ff40d41660 SHA-1: 9b617cbcf0cb3f67fafab97726d67003cbeb7d31 SHA-256: 9ad65377eca8de7027a4f965af1a7bfa2258fe7952b0f92161863b2aaf28504e
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/wix?keyword=hypothesis+for+self+inflating+balloon+project PDF link annotation
    • http://bodipok.getenjoyment.net/mifuse.pdfIn PDF document text
    • http://jovefupe.mywebcommunity.org/section_17_5_of_cgst_act_2020.pdfIn PDF document text
    • https://vibovetegaj.weebly.com/uploads/1/3/4/6/134695113/vonumad-konaboruxir-jipovemuwo-sulunosigijoror.pdfIn PDF document text
    • http://slimitalia.space/93186868423nvhoe.pdfIn PDF document text
    • https://gavofazipog.weebly.com/uploads/1/3/3/9/133999173/josegovibumowebovil.pdfIn PDF document text
    • https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/lorurarulafiveviluje.pdfIn PDF document text
    • https://nogonosexenepe.weebly.com/uploads/1/3/4/6/134674491/jonutawuto.pdfIn PDF document text
    • http://vopugixeroramox.medianewsonline.com/89778629989.pdfIn PDF document text
    • http://digitaloffice24.ru/kogebitamawuw2xgre.pdfIn PDF document text
    • http://nusezuretoti.scienceontheweb.net/savepatidoveniripewifud.pdfIn PDF document text
    • http://copyrighthelpptteam.com/61785445562z7oxl.pdfIn PDF document text
    • https://dozajumeguru.weebly.com/uploads/1/3/1/3/131379069/b1cef93c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/wiwukepisitixiririxef.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/how_to_pray_for_your_unfaithful_husband.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/festival_avignon_2019_programme.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/wowixoxejukex.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/windows_7_vpn_setup_step_by_step.pdfIn PDF document text
    • http://bavotuvezomevi.myartsonline.com/economics_of_development_perkins_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/putuvule.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/pozepa.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/does_flavored_black_coffee_have_carbs.pdfIn PDF document text
    • http://wovuluvoju.onlinewebshop.net/biology_of_insects.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/android_pie_update_for_moto_z2_play.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/rovovolewodob.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDF 5556 bytes
SHA-256: 298436c2deab9eb25fa13f026fbbb508cf3ceb3243d0a8cdb1991c1b0c4b3008
font_01_sfnt_off000101d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D0 11096 bytes
SHA-256: 2a216f51f933769fe87210315700e72ff577f23f0465dc3adda79df4499996b4
font_02_sfnt_off000127ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127EC 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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