Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ffd32772195de76…

MALICIOUS

PDF

94.4 KB Created: 2021-03-25 09:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 36a36155723e3fa56da524eaf87c575b SHA-1: 9ad53167b0a2b4e18fb80f31e343d1b9561db9a2 SHA-256: 1ffd32772195de76a443dbc650025b2aa40e1b1d91d22b938f9422f7e297d149
126 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, specifically flagged as phishing. It contains multiple external URIs, including one pointing to a disposable hosting domain, suggesting a link farm for distributing malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'Deepmind 12 manual italiano', aiming to trick users into visiting the provided URLs.

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://maypoin.ru/123?utm_term=deepmind+12+manuale+italiano PDF link annotation
    • http://jodujimapiwox.22web.org/tickle_his_pickle_ebook.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/e2vhd6V/real_drift_car_racing_mod_apk_aptoide.pdfIn PDF document text
    • http://macsk.space/62681744487l8s57.pdfIn PDF document text
    • https://cdn.sqhk.co/gazamara/iMZN70U/62633082923.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/iahb6DG/diganuraliki.pdfIn PDF document text
    • https://cdn.sqhk.co/weruvewo/e4iegdZ/reset_dungeon_hero_wars.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/kirurasebag4tn4s.pdfIn PDF document text
    • http://toredakaf.22web.org/krugman_economics_for_ap_teacher_resources.pdfIn PDF document text
    • https://cdn.sqhk.co/gunakawujo/cIiiJhK/wibebu.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/rexogeguxosix/appalachian_trail_hikes_north_carolina.pdfIn PDF document text
    • http://tegiledo.epizy.com/appvalley_iphone_x.pdfIn PDF document text
    • https://67bb8873-ca08-4da4-87c0-60a8072ebff6.filesusr.com/ugd/a838c0_bbc02ac0cbc94b6c905470d90fc7aedf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/which_university_is_best_for_data_science.pdfIn PDF document text
    • http://dufowuburaji.rf.gd/90810136692.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/barcode_scanner_using_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/87241815645.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/letter_drawing_worksheets.pdfIn PDF document text
    • https://3d5b2cfc-74f5-4c02-8466-0d369b02955c.filesusr.com/ugd/69b86f_a496ecd9bede4b7fbd30e7c84ed36286.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 8

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_off00011e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E41 5012 bytes
SHA-256: 05424844dfba8a5d1bbf7a9e2e79d5da65d557faf8c5db292ef1ed20a212d80f
font_01_sfnt_off00012f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F42 12128 bytes
SHA-256: e71e5b2c7cbeafb07c43a01ff99480641888a2b84e5f05c4bfe94676d61096ea
font_02_sfnt_off00015689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15689 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939

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