Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad03233b209ad1a1…

MALICIOUS

PDF

106.0 KB Created: 2021-07-02 06:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 694091114a8f59059ec4704e09b8cd16 SHA-1: ce4169bf79828254658c57f001df533ee8b6ab6e SHA-256: ad03233b209ad1a151ca0415bc7528905ce56e0022f7ba53c90d0cb626179ebe
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites and other disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

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://intelekt.biz/uploads/pages/files/tidoxerotewo.pdf In PDF document text
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/82gl1l9vebkpovl39bnn7c4k3f/58217635913.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088fc70ca623---30088368726.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/cdf094999d38f3fe46f61de0db1f681d/98169308698.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/128lgi9k1027fjak8lf0apkfm1/poligaro.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c17095dd847---jaruvolo.pdfIn PDF document text
    • https://thefertilizergranulator.com/d/files/55036932461.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085151ec51be---24916999427.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160ad583180373---61212084445.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/6f380590518686471e73647273411380/56659137233.pdfIn PDF document text
    • http://wannawwannie.pl/userfiles/file/30695969353.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a500da34450---73221778578.pdfIn PDF document text
    • https://tidaksusah.com/contents//files/52106674494.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdce0c3f21b---ruxivifidazos.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160afc504e5d51---58766886976.pdfIn PDF document text
    • https://k-newsletter.com/ckupload/files/tawojimapu.pdfIn PDF document text
    • http://novussiteyonetimi.com/uploads/file/27330175077.pdfIn PDF document text
    • https://samowar.ch/upload/file/kuxoz.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160afdb6cf15b8---34800160987.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160caccc922c99---zobowazexametifapos.pdfIn PDF document text
    • http://chieusangducphat.com/uploads/userfiles/file/kalefesumon.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/g2hgu238b3sc90kqvir0smi59u/39191152657.pdfIn PDF document text
    • https://luminex.pl/upload/file/puxikimijur.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077089a31397---zedadowobepumulopa.pdfIn PDF document text
    • https://dalnoboy.com/data/filestorage/upload/files/69239445295.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=rrb+ntpc+reasoning+question+paperPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000120fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120FA 19056 bytes
SHA-256: a9321f66bc711dadc7a4c52e807b22da7d3f76d8887acd2dceb469874b463201
font_01_sfnt_off00015284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15284 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A95 16424 bytes
SHA-256: edc58c902ba2c2a81032a7670f8e461a2aad9dbccbf0a20735dd93fbc5c22999
font_03_sfnt_off0001810e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1810E 10932 bytes
SHA-256: a6d866fadb682403b7785fe842c88cac5dfa84ac26bbad64285046ae147671a0