Malicious PDF — malware analysis report

Static analysis result for SHA-256 b288d7e2a45d4be3…

MALICIOUS

PDF

84.9 KB Created: 2021-03-14 13:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8ce77c4e7e9db54b9a98742d6b8e2b59 SHA-1: 56b4cddcbf2bf17aaeae4fa7de7647957d44489f SHA-256: b288d7e2a45d4be3667e548f745013cd718d98ec4dd4ee008b8c6afeacd00b90
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or SEO spam campaign. It contains numerous external links, including one to 'midufefew.ru', suggesting an attempt to redirect users to potentially harmful websites. The document body, though heavily obfuscated, appears to be a lure related to 'Ahle hadees islamic books urdu pdf'. No scripts were extracted, but the PDF structure itself facilitates the link farm attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://midufefew.ru/award?keyword=ahle+hadees+islamic+books+urdu+pdf PDF link annotation
    • https://s3.amazonaws.com/tuletivotarupu/gukabupix.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/55760140300.pdfIn PDF document text
    • http://zumikavu.22web.org/runecrafting_guide_osrs_f2p.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/american_button_maker_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/rokukoso.pdfIn PDF document text
    • http://gefaveje.22web.org/bomakasigegofegubejafiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jigikox.rf.gd/call_of_duty_1_apk_free.pdfIn PDF document text
    • https://c1cb471f-fc5c-4ef2-b3e1-4d0d0d09d135.filesusr.com/ugd/cc5b41_d7e3835325d24c09b96865891121ded2.pdf?index=trueIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_fad33b9a2a5246779aaafc9b4fdc35e2.pdf?index=trueIn PDF document text
    • https://e22e8d81-f41f-4d51-abb1-39b19d2d32bb.filesusr.com/ugd/96bf9d_34cbbc7ed65c46d8a525930f41e23049.pdf?index=trueIn PDF document text
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_e01df2012def4e26b4ebf88dd71b75d9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea3a7d0e-4e78-491c-874a-c6492943dae8/idylis_freezer_reset_button.pdfIn PDF document text
    • http://borovob.epizy.com/nagasivetilipux.pdfIn PDF document text
    • http://zefuxaninegug.epizy.com/susukedifak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfa25b3a-6159-46de-842e-4bc5d92e769d/punazunididupesituledujo.pdfIn PDF document text
    • https://a3cd4400-5fdc-4e6a-bda8-88556a2d4d1f.filesusr.com/ugd/2f7489_85c6399abea446608621c157808394b5.pdf?index=trueIn PDF document text
    • https://2acf176d-1645-44e4-83be-c67f7ac9af6b.filesusr.com/ugd/e72dd6_041474b66698475e9ccb5129028fe5d9.pdf?index=trueIn PDF document text
    • https://37bdae34-bb2f-403f-997c-54a7c09d9c06.filesusr.com/ugd/dc98cc_1c91d813699848af85827fe6598f0d16.pdf?index=trueIn PDF document text
    • https://a24bc4ef-4ee2-4fae-af0c-c9fea810b245.filesusr.com/ugd/67d96c_9caf784029cc49af88bc868b52489640.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1e4b04-b70c-48ce-89ef-fe5ef18b1b1b/36542484824.pdfIn PDF document text
    • https://d128792e-e0a8-46e0-98ed-b941f5da69b2.filesusr.com/ugd/b98abb_e3faeeffd40940f2a4cbc7110e4d578c.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

Related samples 7

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_off0000f48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48A 5588 bytes
SHA-256: 3e88e35518d5aa8442e34e3233c6c478379355bb85ce0a0136b0b7c44cd5571a
font_01_sfnt_off0001075e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1075E 11380 bytes
SHA-256: 747c7d680fa85b959d878a606aa03ba25b35d2b989406825ead3ff45b14c83d5
font_02_sfnt_off00012e5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E5C 16364 bytes
SHA-256: 5c971579a9757ec78140e64ead599d54fdf12b60b3cf2ea948461a3b0714b55c

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