Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee12a66da15a7b9f…

MALICIOUS

PDF

74.9 KB Created: 2021-04-04 00:30:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ae99ac399a5fd6b8f9d5bfbad6d1cf4b SHA-1: e115a343aee96a4e75c9fc47e300ec07cc44264e SHA-256: ee12a66da15a7b9fe939d79d64ce615edcb7de7f1a8d9b1343b8de602a1dd7ee
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or scam campaign. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure, likely attempting to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://xajibur.ru/award?keyword=cuidados+del+pez+betta+pdf PDF link annotation
    • http://lazezubeb.22web.org/baseba.pdfIn PDF document text
    • http://vovevowumusiki.iblogger.org/43983534106.pdfIn PDF document text
    • http://rijupoxog.22web.org/numodurufukimef.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/kingsman_the_golden_circle_full_movie_download_720p.pdfIn PDF document text
    • http://rigewojugofalas.iblogger.org/gojenajuperokoxut.pdfIn PDF document text
    • http://sutiwejepeb.22web.org/lo_que_no_te_mata_te_hace_ms_fuerte_frase_original.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_ceb9d9bc33424953a1174f4dfe79419c.pdf?index=trueIn PDF document text
    • https://704d67de-a0ba-412a-a77d-f8c4cf0d88a3.filesusr.com/ugd/a83d94_a1d2624d6e9c45539138ada4ccf2f7c3.pdf?index=trueIn PDF document text
    • https://3e021c9a-284a-4c54-9ba1-f6d43d4d2ba5.filesusr.com/ugd/a619af_72e0a81b65624951a7253b8f615864c0.pdf?index=trueIn PDF document text
    • https://728bf1be-24e3-4891-ba98-fedceca1a503.filesusr.com/ugd/3268c8_2ce29fe6c8c0491a85e438600c9a63d5.pdf?index=trueIn PDF document text
    • http://gufobipadu.epizy.com/13460820256.pdfIn PDF document text
    • https://ff19a39e-637c-4fc6-80cc-750024e8dd37.filesusr.com/ugd/d217e2_b10940f1087348ddb93931eec14601b4.pdf?index=trueIn PDF document text
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_3ace3ebba4df44f3ae7411e7028491aa.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4034a8c-b7a4-4970-93d0-c9dbdef169b8/refowipajomexupapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/801ca200-57ae-4a9a-9fc9-4bec88bef3e8/what_is_novice_to_expert_theory.pdfIn PDF document text
    • http://mozaninukokefef.onlinewebshop.net/cauchy_schwarz_inequality_proof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10564768-0975-4d66-91f6-72def0b477d9/proform_740cs_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26b59e2f-0f36-4e13-b5dc-c95a0345b736/dometic_air_conditioner_specifications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4013c312-53e4-4456-bfad-bf0b4177abd7/tijitapowizivus.pdfIn PDF document text
    • http://vowafixugologu.epizy.com/erorterung_beispiel_klasse_8.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE863 5032 bytes
SHA-256: 3f86511a0930b942ed49f3caebb828366e77c6983eebf1efbb33d44cda0f379a
font_01_sfnt_off0000f990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF990 11460 bytes
SHA-256: afb9ae50d6999ef34f08f44c92606a263f0cf66789698516eef0756f06a05755

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