Malicious PDF — malware analysis report

Static analysis result for SHA-256 e713c599802e56a9…

MALICIOUS

PDF

77.8 KB Created: 2021-09-01 17:38:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 846726799034a12a92b3a900b2bc7d20 SHA-1: caa9d635b191e9d9f335d48ef064cb7bdf679471 SHA-256: e713c599802e56a91729a69878ef8aa61f97abb0c0c5f1601570e3ac7eae56f2
176 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded links pointing to various websites, many of which appear to be compromised WordPress installations or disposable hosting, suggesting a phishing or malware distribution campaign. The presence of these links indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 https://garglob.ru/uplcv?utm_term=roses+are+red+my+love PDF link annotation
    • http://remont-elektro.eu/archiv/file/sigapagulotodusalakasaz.pdfIn PDF document text
    • https://keralahappyjourney.com/ckfinder/userfiles/files/25146820223.pdfIn PDF document text
    • https://faltprasten12.se/anvandarbilder/70/files/jogamosatoxilegekixokemu.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/i7rcu98mghutlf77ogov23evr3/kozubikeduvavefunuvaviwo.pdfIn PDF document text
    • https://postelezmasivu-olomouc.cz/ckfinder/userfiles/files/jufavizubuweru.pdfIn PDF document text
    • http://puebloexec.com/userfiles/file/zifigiruvezitu.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/a417208277616d6e15578a5a7c4729bb/nowuvuleforunos.pdfIn PDF document text
    • http://www.minaakshimajumdar.com/fckimages/file/40091197133.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16071b9cdb62b2---gilobomupajomarusokus.pdfPDF link annotation
    • http://ventima.ru/userfiles/file/posatiwa.pdfIn PDF document text
    • https://alzubidi.com/userfiles/files/ralelopadub.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/sd37qp4ea7j60nv4hpo375rta6/kuwurifanepome.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871f09944ef---puzuzofoni.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6d61d8aeb---namajofiguf.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/521602b54e5cc89af754a05b2f732e9d/lofaroferub.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/efb88af35b8d833d1a001f4d9869ddde/davufawovi.pdfIn PDF document text
    • http://infoegrafica.com/userfiles/files/58804101958.pdfIn PDF document text
    • http://theponghop.com/upload/files/vuwal.pdfIn PDF document text
    • http://cosmikkino.ru/sadm_files/sojivozeworagupuxusexedev.pdfIn PDF document text
    • http://dzwigipoznan.pl/userfiles/file/pavetelojosotikanumuzefo.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160bf20b240bac---11937146012.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16075c6cd2bd15---gixipifupezelopafa.pdfIn PDF document text
    • https://diedacorporation.net/freesiafiles/file/fazujokisezasevisozo.pdfIn PDF document text
    • https://kodcomputers.ro/2664/uploads/24415781393.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD1E 10340 bytes
SHA-256: e5901f97c501a7b85643654b6bc3635c93a53e0dca9d01d018dc90323009b143
font_01_sfnt_off0000e486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE486 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC98 17368 bytes
SHA-256: a19074ad208cedf024fbdb25a182199f00717a7c7f594b2a71b632ae12ad997b

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