Malicious PDF — malware analysis report

Static analysis result for SHA-256 beeb783916d5dd69…

MALICIOUS

PDF

81.8 KB Created: 2021-06-29 10:11:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5254c69a4b0a78e82d14133d38b7c57b SHA-1: a85a5425f84004326011c7f7356c32e9711995fb SHA-256: beeb783916d5dd69a9610d6ef931ccec2e44731e166023ab64d1dd03aca7c021
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress sites and disposable hosting domains. This suggests an attempt to distribute malicious content or engage in phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://www.mueblesgamez.com/ckfinder/userfiles/files/zarutodotinonawif.pdf
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6a7d2f090---39995852948.pdf
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/60q1t0dvafltnlmut067u2gqc3/75941823413.pdf
    • http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/44754412487.pdf
    • https://weddingitaly.jp/images/file/fuvijekolulasov.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a00464c15c1---67313061065.pdf
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/7318236aeec6ddf872030830936a8db6/lagerawades.pdf
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609de1242ad1e---visapijilagipovo.pdf
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/0dd350e495109ffd788ec4af97ca6c2d/38202918872.pdf
    • https://goodline.by/userfiles/file/veriwulemadumumurosixa.pdf
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a16b5d01a8a---rojel.pdf
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/feb1f88acf40eb745240d0cbed074dfb/wuzem.pdf
    • https://anfauglir.com/images/file/puvovixotagilesiwazodafes.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/c56af87284fe0f7d8a50fb8b416658f8/98331472411.pdf
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5dbc99c67---zebavenozenadixulizem.pdf
    • https://samarpanbharat.org/trila/userfiles/file/mesivev.pdf
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609c14d461526---53693896535.pdf
    • https://vishalahospitality.com/ckfinder/userfiles/files/jimodirofalerero.pdf
    • http://vaness-sens.fr/ckfinder/userfiles/files/subosisemamotimupiv.pdf
    • http://hncastlecable.com/d/files/pedazoxidawofiku.pdf
    • http://ankurgroups.com/userfiles/file/62834435813.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3632c45bc9---gaborezanefalapid.pdf
    • https://aduanaldelvalle.com/userfiles/file/likebubezuwa.pdf
    • https://2acontractor.it/images/file/bodabogixinuxisosisojus.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=subsidy+meaning+in+kannada
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/16bc34fd835db2d3063ea43976d50e72/51980559249.pdf
    • 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_off0000db5e.bin
1c261e1e0e35bf4622cb1b6b4777ddc9748fe44e697f03cf97f0e9d624979e13
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5E 17748 bytes
font_01_sfnt_off0001096f.bin
5a45492737053208dd36a5469cef8bdb3967b9ce1f33df093519179cf84d7209
pdf-font-stream PDF embedded font (sfnt) at offset 0x1096F 10748 bytes
font_02_sfnt_off000121e8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x121E8 16792 bytes