Malicious PDF — malware analysis report

Static analysis result for SHA-256 1748dd12da08810d…

MALICIOUS

PDF

79.4 KB Created: 2021-05-12 01:11:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e8457d52daf28938ecaadfe31ff2044 SHA-1: dcdeda98e2a167e8e36563dd1293edcf2cdffd7d SHA-256: 1748dd12da08810d6e0719761d099fff4aa469d7def14b8efe87eac6e22a2f02
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to disposable hosting services, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via the linked content. No scripts were extracted, but the presence of numerous external URLs is the primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/strik?utm_term=long+range+baofeng PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453729/normal_5fe6a084bc509.pdfIn PDF document text
    • https://murerodotabuvo.weebly.com/uploads/1/3/5/3/135327115/lijokemibupo-rodikebafabel-gadomedol-sazonalolewabil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416316/normal_6041296315e2e.pdfIn PDF document text
    • https://rirulejirosajis.weebly.com/uploads/1/3/4/3/134320684/linafu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386828/normal_605fbdb44d951.pdfIn PDF document text
    • https://cdn.sqhk.co/vizelupavew/bjd6yy2/word_scroll_search_find_word_games.pdfIn PDF document text
    • https://bogobesupagal.weebly.com/uploads/1/3/0/7/130775478/eb446eb8.pdfIn PDF document text
    • https://tavabaxo.weebly.com/uploads/1/3/1/0/131071290/81ba222.pdfIn PDF document text
    • https://cdn.sqhk.co/vomemubevu/KKjhkgj/duck_hunter_sauvignon_blanc_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420020/normal_6023049b12c9d.pdfIn PDF document text
    • https://cdn.sqhk.co/wemitupu/fDC2Oia/lozuzobog.pdfIn PDF document text
    • https://cdn.sqhk.co/kifukuvitog/ihW8jaU/46247536281.pdfIn PDF document text
    • https://zobagitolofoxaz.weebly.com/uploads/1/3/0/7/130739917/fizoropafonovo-taxinirejuru-wibutalatijutu-zerabez.pdfIn PDF document text
    • https://cdn.sqhk.co/zurajekiviw/fjjCvM9/wizuravar.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/iDhbehd/wefodeverenevezafiro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/9e2f3344-7649-4e6f-874a-d6558530a687/xidosipijesivigiruwiz.pdfIn PDF document text
    • https://27158da8-170d-48ca-a528-b8ced62fe517.filesusr.com/ugd/9fc8c3_1d15ff16497a41feaad33f2c0182e244.pdf?index=trueIn PDF document text
    • https://288c7b4b-0494-48f6-8ee2-9dd519b96b0a.filesusr.com/ugd/a107db_b1e840691e884697869c5d6548ca90a7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c35b64c7-d7e1-4b82-b4e5-9a88f89b9595/what_are_the_causes_of_curriculum_innovation.pdfIn PDF document text
    • https://4d3f6715-1114-433d-a4b7-45a5e22e3858.filesusr.com/ugd/ce86b4_e1d1b35a1a2747b88edfc3af2fb7a1e0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1a9f38c-3c01-4c3a-a321-9a7f026bd81b/mevew.pdfIn PDF document text
    • https://08c3cc13-1ce0-4add-927e-a3aed263473e.filesusr.com/ugd/ccf397_dab1a752f6514b3c9b138235a06e9529.pdf?index=trueIn 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://scripts.sil.org/OFLIn 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_off0000d719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD719 4464 bytes
SHA-256: fa1fd784bc91464b34cb8c58468329331860001a2d62c98e401067cf9746a56e
font_01_sfnt_off0000e646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE646 11316 bytes
SHA-256: 82d28a64e8efe1e1b74ae3c3861337f477542dba5fe10e4adadb9ab8ff6b0e92
font_02_sfnt_off00010c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C34 16260 bytes
SHA-256: b1b93bf558ee65cf174bdde98fc70b39c77ddcfeef9d3a00758a58eb2f24951c
font_03_sfnt_off000121a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121A9 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176