Malicious PDF — malware analysis report

Static analysis result for SHA-256 056c0f5c8a8d4750…

MALICIOUS

PDF

68.5 KB Created: 2021-03-16 13:27:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5008904eefdb62fb4ce5076f0c8c9a23 SHA-1: 7a29bb13066356b18665c156c5d4df58125f02f7 SHA-256: 056c0f5c8a8d47507518085fd607aff8d2b6f127f8234f2e8b08effa6a457446
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. It contains an embedded URI pointing to a suspicious domain, 'jumiwimov.ru', which is likely used for phishing or to serve a malicious payload. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/strik?utm_term=hye+young+you PDF link annotation
    • https://cdn.sqhk.co/litonesi/hdhdKGH/wedoj.pdfIn PDF document text
    • https://cdn.sqhk.co/kubibosujiko/gp4jjJu/canada_citizenship_photo_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_602d432a9660b.pdfIn PDF document text
    • https://cdn.sqhk.co/lukuvekeliki/Jiijkje/guide_warhammer_2_total_war.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469630/normal_60414e6d2d80f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420238/normal_5fd7755939aba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477638/normal_60146a0d2089c.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/lodazojamuva/verb_test_2nd_grade.pdfIn PDF document text
    • https://8ca15cf9-c5bf-4329-906a-32df3c7b5ab7.filesusr.com/ugd/4ca7f5_3c246afd1f0e409389c198f4b1879fdc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lomogas/google_chrome_apk_for_android_2._3.pdfIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_32fb7fbd16f34028b5557f1fdcc41d70.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5db59117-a1ab-45c4-827e-5aea2dae6d7b/93903267662.pdfIn PDF document text
    • http://tugojan.rf.gd/fl_studio_11_tutorial.pdfIn PDF document text
    • https://a519209a-2b0a-481f-9fe9-460c873bdc80.filesusr.com/ugd/270e53_6b6f0eaac82f4578a208a0a0493f0152.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tiduro/96649914668.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/which_word_does_not_belong_with_others_noun_preposition_punctuation_adverb.pdfIn PDF document text
    • http://parimefi.rf.gd/dmv_audio_handbook_2014_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb5083ec-ed5a-4274-92a3-7f145614b2a1/babaniradajunazira.pdfIn PDF document text
    • https://1eba3b37-3dce-45e8-aa15-e51a58efc0fe.filesusr.com/ugd/89e37c_5882719ea5ce43ae8c88389da722f939.pdf?index=trueIn PDF document text
    • http://nogogesusuwebob.epizy.com/kivej.pdfIn PDF document text
    • https://2571d5ef-7130-409a-b87d-c3fd18a83f30.filesusr.com/ugd/71fc55_3625f08f102541a5918ef5ee9a171302.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/25307927125.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_off0000d260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD260 4400 bytes
SHA-256: a929e5229e29e2c8324785860840d35fe4d69e55dcc802d1a1c43849102cd219
font_01_sfnt_off0000e17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17C 10480 bytes
SHA-256: 668d88853e26a2dc4bcfbc0171d07e6a241a8a7316e510dafd6e6a150018edb9

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