Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a19c2924cb22df…

MALICIOUS

PDF

77.8 KB Created: 2021-04-06 12:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 314f353f1f096114b7a7dffedfd113f1 SHA-1: 56319d01c26b60385b25b14ee126d471bab991a7 SHA-256: d7a19c2924cb22df8fec5a03419b2d90e880908322fb80e6dd9c686bf3e9ddb9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/aws?utm_term=indian+air+force+academy+address PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481662/normal_6027aa0084aac.pdfIn PDF document text
    • http://markettop.pro/plan_y_programa_2011_geografa_secundaria32idy.pdfIn PDF document text
    • http://uuuuull.space/46464246124j59lv.pdfIn PDF document text
    • https://cdn.sqhk.co/lijusute/fxhjnoE/72437018280.pdfIn PDF document text
    • http://uspeh.icu/bohat_tta_chud_tta8z2y8.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/zjjQibR/bubble_witch_2_saga_apk_old_version.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458837/normal_5fdaabb3c6dd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_60415716025cf.pdfIn PDF document text
    • https://cdn.sqhk.co/gupetipek/haOjigc/all_free_spades_games_online.pdfIn PDF document text
    • https://cdn.sqhk.co/kinuneba/Of6Y9ie/cupcake_recipe_lemon_meringue.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/jgiOojg/cost_to_knock_down_textured_walls.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://defefefesid.rf.gd/18250696878.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/bhojpuri_film_song.pdfIn PDF document text
    • http://riwofepijisanet.epizy.com/xoxix.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/52291228142.pdfIn PDF document text
    • https://66166ed5-207d-48ad-a5ac-83b7e977862f.filesusr.com/ugd/0d0d42_4ff2a45532d04504b6183ce656c71f1e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/integer_wavelet_transform_matlab_code.pdfIn PDF document text
    • http://tajapog.rf.gd/race_car_aerodynamics_designing_for_speed.pdfIn PDF document text
    • http://bidemuv.rf.gd/cirrhose_du_foie_traitement.pdfIn PDF document text
    • https://6632aaff-1fe9-4f1d-acb3-7d444e457837.filesusr.com/ugd/ce4b7c_cc891c8d6cb24a678a950a2e9b3f5370.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/188664975.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/78829498691.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_off0000f36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36F 5176 bytes
SHA-256: 9a9d2520e7abf68b9f24a928db082e835f54229e8319794bab8df8e8b48a51fa
font_01_sfnt_off000104fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FE 11056 bytes
SHA-256: 5d6612f108256070c4990b8525edabf1257bae67cf4d70fb29aaebb21cfebb3f

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