Malicious PDF — malware analysis report

Static analysis result for SHA-256 722742fc25f3c330…

MALICIOUS

PDF

89.3 KB Created: 2021-01-23 18:27:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 1867b1534ca3cc4ec80782c12c572d3a SHA-1: 5d8b8c17058dcd66a9e443e6351bc4fdd25a9d78 SHA-256: 722742fc25f3c330bc391ac3abc8f3942e7b26e963e47ed1538b9744cae741d7
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that could be used as a lure. The presence of numerous links on disposable hosting further supports a malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/aws?utm_term=angular+4+template+driven+form+example In PDF document text
    • http://gulebamabixaku.22web.org/aaron_blaise_photoshop_brushes_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376879/normal_5ffb05106cbe3.pdfIn PDF document text
    • http://zinobinipote.22web.org/divinity_ii_original_sin_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383577/normal_5fc9b2de03646.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372983/normal_600001704e5c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_5fd654c079e9b.pdfIn PDF document text
    • https://wunurobi.weebly.com/uploads/1/3/4/8/134881210/zurifugabimotebutaw.pdfIn PDF document text
    • http://naxiramomamaz.66ghz.com/xebuge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://nirirojigupe.epizy.com/44497525479.pdfIn PDF document text
    • http://sajipesexadagon.epizy.com/chalo_movie_ringtones_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/cryptotab_browser_pc.pdfIn PDF document text
    • http://desetezovadu.epizy.com/arduino_ide_link.pdfIn PDF document text
    • http://winenezufu.epizy.com/moxufemalatase.pdfIn PDF document text
    • http://gadexasumale.epizy.com/math_101.pdfIn PDF document text
    • http://likijanima.epizy.com/justice_league_movies_animated.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://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BA 5388 bytes
SHA-256: 97b3a1e6211fda15be0f7d87f0d2d40c46210ab88f5acd87d90d0715cfef6453
font_01_sfnt_off0000f80e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80E 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off00010371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10371 11264 bytes
SHA-256: 1727bfc09b4ad34aeb2bff33e3df6b172af8cb7d87f7da0484da92a024c5d1b7
font_03_sfnt_off00012a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A5A 16416 bytes
SHA-256: e1b2b4688557f53d7bb3b0cae3646c5c298247c7f5722a4b8c84b67043f591e1
font_04_sfnt_off000140d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140D2 6236 bytes
SHA-256: b862aced78f2b5d06013186e6ad3ba6e02b58bc5278e904ccd8d003827c4b364

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