Malicious PDF — malware analysis report

Static analysis result for SHA-256 171281514b434f95…

MALICIOUS

PDF

70.7 KB Created: 2021-02-05 23:19:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e497d45e83b535dde3fbef525ee9deba SHA-1: 2aa50464582ebb63e93ac3ad8b9eb5411acfd141 SHA-256: 171281514b434f9580454e1b73dbd66ad233a3bf075e13030d837122f6f47361
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'leonvi.ru', which is likely used to deliver a malicious payload or phish for credentials. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/123?utm_term=load+data+6.5+creedmoor+imr+4350 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418968/normal_600c06ff29ca8.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/codigos_para_control_universal_isel_u-47_hd3osst.pdfIn PDF document text
    • http://reduslimitalia.site/lecture_ready_3_second_edition_answer_keyp00b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408589/normal_5fcbfaf9a9350.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466411/normal_5fcddca746caf.pdfIn PDF document text
    • http://converstarget.ru/amoeba_sisters_alleles_and_genes_answer_keyhlgf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416927/normal_600af60b2414b.pdfIn PDF document text
    • http://apsmall.space/qlikview_training_material5ogk6.pdfIn PDF document text
    • http://e-devletodeme.net/candy_crush_friends_charactersyqxih.pdfIn PDF document text
    • http://pixell.store/libro_abc_instalaciones_electricas_residencialespxf7w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/khokababu_bengali_song.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/55179130449.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/jomamogisuzumavunides.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/3782944882.pdfIn PDF document text
    • http://bexudogi.rf.gd/reflection_in_x_axis_transformation.pdfIn PDF document text
    • http://kebafitesulodu.epizy.com/vsco_x_apk_for_ios.pdfIn PDF document text
    • http://wozawexopad.epizy.com/android_file_transfer_mac_device_not_found.pdfIn PDF document text
    • http://puzuzebud.epizy.com/rixevuri.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d72c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72C 5520 bytes
SHA-256: a74a01a4ea728bf5038f4028fceb745626f30f8fc213825c81edffd933204565
font_01_sfnt_off0000e9eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EB 10556 bytes
SHA-256: 1586168770e5d2d1ae6c0992343a4e12cc0c57d8cc6622eed05fc08b50fc2a8c

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