Malicious PDF — malware analysis report

Static analysis result for SHA-256 86342ba7f330737c…

MALICIOUS

PDF

83.2 KB Created: 2021-09-09 03:35:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f19db780587f9d7d2365fa99540e3864 SHA-1: e9ace80769ae337822e3f40d7bdbe2a5a340d56a SHA-256: 86342ba7f330737cbfed738248bd153fb71d2a660c5295fd7d67b638d2063412
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to potentially malicious or disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a common phishing or malware distribution technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 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://swapnauraan.com/ckfinder/userfiles/files/tugasax.pdf
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1613655aa528bb---siwizoziko.pdf
    • http://wohntraumgmbh.at/47051257180.pdf
    • https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/vegan.pdf
    • https://kimansion.com/uploads/file/kivivipefaditabix.pdf
    • http://nzozkrowodrza.pl/uploads/editor/file/gibavinukikap.pdf
    • https://lekkermooi.nl/userfiles/file/guzijire.pdf
    • http://mutitar.com/user_img/files/75869143309.pdf
    • https://emenu.hu/editor_up/duzaxoronanoguda.pdf
    • http://mariopresto.pl/userfiles/file/jonodabiditomavugimapewu.pdf
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/rr2pi9r6t9t7ir8e5had55ch1f/94952628339.pdf
    • http://slabowidzacy.smprzemysl.pl/ckfinder/userfiles/files/nowimekotefapixigutikiw.pdf
    • http://www.awakohchang.com/image/upload/File/8487335832.pdf
    • http://maxgear.cz/webpagebuilder/ckfinder/userfiles/files/25499706034.pdf
    • http://bagodilovaspark.hu/userfiles/file/wotixexeter.pdf
    • http://larben.cz/media/images/upload/file/50923706347.pdf
    • https://interativacorretora.com/fotosempresa/files/suvemovutisos.pdf
    • http://ginzaoakland.com/uploads/files/lapamavebifuduzigozu.pdf
    • https://ruedi-leuthold.com/userfiles/files/bamutunogesemu.pdf
    • http://riverside-plaza.com/upload/userfile/files/51168317819.pdf
    • https://cribpointonline.org/cribpointonline/userimages/file/bunuwibejolaxexavisada.pdf
    • https://icon-studios.com/userfiles/file/vutafibalevizikuxegejuk.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=watch+back+to+the+future+online+free+123
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dee7.bin
b6a42425dd34cff9cc6b708f92c3e5324df3ea7ee1da8a4ad13f11fe7884396b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE7 18348 bytes
font_01_sfnt_off00010e13.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E13 16792 bytes
font_02_sfnt_off0001262a.bin
9a57ce4fd00f1897f8805837550bdd26fbee79266353f5fab2afb3b2c795dce0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1262A 10936 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.