Malicious PDF — malware analysis report

Static analysis result for SHA-256 56eb0d0e73fee78a…

MALICIOUS

PDF

81.5 KB Created: 2021-09-03 20:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1cce31a2358f0812738bf3eaee88884b SHA-1: 55553ba8e448e88bb58397d5a92be9a23a0f84ac SHA-256: 56eb0d0e73fee78aca3b61338cab1d606f22bce3a3dba10b5b50dc3c5f09eb5b
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to websites hosted on compromised CMS platforms or utilize link farm techniques. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to lure users to phishing or malware-hosting sites. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://tatennis.ca/clients/29257/File/komad.pdf In PDF document text
    • http://xn--80aafkatcapceshpicpg3h.xn--p1ai/pict/file/bezonemesajode.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/go4qng8jhq5k1vigmmntvbe013/fatuluf.pdfIn PDF document text
    • https://pass-eco-energies.com/ckfinder/userfiles/files/93265637385.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/af05ca0dfde89316bba5ba9895fecf29/776176475.pdfIn PDF document text
    • http://tecnoservizi.com/userfiles/files/xeguxetagaxadobaradeto.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/18f8a871122885a862b05dc8a5b2c356/dufabuzanajatixoxinu.pdfIn PDF document text
    • http://www.gamylai.vn/uploads/files/tapeweluwa.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5ae4d273cd---3530301530.pdfIn PDF document text
    • https://sapporopools.com/contents/files/4760170858.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/foxinilova.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/tofukuvowulatexipexiv.pdfIn PDF document text
    • http://dobrasekacka.cz/userfiles/file/24707371934.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/6ce10d45f5ff2fdbf2206287e2501b2d/86522996584.pdfIn PDF document text
    • http://vattucongtrinh.com/userfiles/file/xapufawatowegobipolep.pdfIn PDF document text
    • https://cncunse.com/d/files/39267150020.pdfIn PDF document text
    • http://harasim.cz/uploaded/files/tegobufapajomepi.pdfIn PDF document text
    • https://promobryansk.ru/userfiles/files/52853524253.pdfIn PDF document text
    • http://aodaibooking.com/FileData/ckfinder/files/20210708_C43EB5C2E2F4DA41.pdfIn PDF document text
    • http://hani-bee.com/userfiles/files/fanuzuriwigukuwedox.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/bnqhkot20kqee1gqsfutv3s235/46288185793.pdfIn PDF document text
    • https://akproauto.net/nbloom/fckuploads/file/52593793690.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160fc8d2468ffc---diwoxasemidabu.pdfIn PDF document text
    • https://irantruck.ir/data/file/gavolodep.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=class+12+biology+notes+cbse+pdfPDF link annotation
    • 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://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_off0000d8a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B5 17972 bytes
SHA-256: bedaf2cc5cec890e2ca8fd25edce1bb1e24bdb027bafebb47e01701f344d5abf
font_02_sfnt_off00011eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB9 11152 bytes
SHA-256: 633dfc36d8d745fced647a7891b7542293e5b15c6fb7ee7d210323b34c0a817b

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