Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f3b408d6106fb0…

MALICIOUS

PDF

131.2 KB Created: 2021-03-25 12:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: a7a089477d370e17829cf60ccc4a8f79 SHA-1: b4dcf2be3715905b7986fc144203c4fd02b2c31c SHA-256: 56f3b408d6106fb0d59d50fe4db4b3404cf4d56605d742a3f2d6c15b291b7629
96 Risk Score

Malware Insights

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

The sample is a PDF document that contains a lure related to a 'Leica 1600 b manual'. It embeds external URIs, with the primary malicious URL being https://nipisod.ru/wix?keyword=leica+1600+b+manual. ClamAV detection and ML classification strongly indicate maliciousness, consistent with phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/wix?keyword=leica+1600+b+manual PDF link annotation
    • http://qlemelest.online/cinderella_and_four_knights_eng_subr61vt.pdfIn PDF document text
    • http://reduslim-officialsite.site/pobawenedirazupapeabf5l.pdfIn PDF document text
    • http://masajsalonunuz.com/how_to_scan_using_scansnap_ix500ugkcw.pdfIn PDF document text
    • http://wisopenudaris.22web.org/blue_jackets_lines_with_laine.pdfIn PDF document text
    • http://fexabudobix.getenjoyment.net/xapirexonoz.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/maths_formulas_for_class_10_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xaripisi/ThcheEv/best_love_stories_on_amazon_prime.pdfIn PDF document text
    • http://leyloften.online/cronicas_de_narnia_4_estrenop1hfl.pdfIn PDF document text
    • https://cdn.sqhk.co/lirotigi/JhaWihd/polerusegidabo.pdfIn PDF document text
    • http://hayatevesigar.online/mens_haircuts_2019_short_fadepnv8s.pdfIn PDF document text
    • https://cdn.sqhk.co/jugemito/jhiBGoe/jefofanoparupenaganumo.pdfIn PDF document text
    • http://pevelumi.22web.org/2020_audi_q5_owners_manual.pdfIn PDF document text
    • http://gavediteriremuv.medianewsonline.com/weapons_qual_to_promotion_points.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gupojakami/pizonogeganepewese.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/guzejovafa.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/tabla_periodica_elementos_quimicos_no_metales.pdfIn PDF document text
    • http://jewojaregoluwat.epizy.com/tenis_converse_plataforma_para_mujer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72059a0c-4a10-45a9-9bda-e627564681e7/58395219497.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b0904ae-2feb-4a1f-a02f-12298871e4c4/evh_5150_iii_lbx_ii_settings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bb09d74-1d9f-4141-a251-c9ef9b2c9611/53217455108.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/39244694671.pdfIn PDF document text
    • http://dogosiroluv.rf.gd/96575690778.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/20198207502.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A24C 4792 bytes
SHA-256: e9adb82977ec052829b6759838795e2e7ab1d082a163192737322bb9ab8be551
font_01_sfnt_off0001b275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B275 21632 bytes
SHA-256: 4f924f62282f7af98383ebef281b84c52c9b5732424e38d6e67c5c3b6b61fbf7
font_02_sfnt_off0001ef75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EF75 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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