Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be5d676a27aade6…

MALICIOUS

PDF

86.0 KB Created: 2021-05-22 16:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6716fe5d491bc39d38ecb264b3d65f00 SHA-1: 16f2bbbccbd3a339f59c66dc9faabcabe22de6a2 SHA-256: 7be5d676a27aade670d9e4624a1b1f5166b4588654fdf24923378d8eda4fd101
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is likely used for phishing or to download a secondary payload. No scripts were extracted, but the presence of the malicious URL and the overall detection strongly suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/strik?utm_term=what+size+tig+filler+rod+to+use PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421042/normal_5fff76eae8bd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_60301a175c52d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458132/normal_6015f56627e04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402507/normal_6016a6043ded1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480736/normal_5fe08438da6dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365576/normal_602c7d2e20d19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478438/normal_601ad2d012d87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454807/normal_5fedf6671df77.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://uploads.strikinglycdn.com/files/330f574e-bfc0-4fa1-9646-40939b74e3fc/ms_word_cv_format_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24b71ad4-bbc4-477a-a31f-c0f30b392801/85223649698.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fb76009-ed6c-4307-8dc0-7f8454912592/descargar_aci_318-14_espaol_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19eb3649-29cc-48f5-8a78-dad11915680e/tai_chi_sword_training_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adcd0bb3-a603-4cbc-8cb9-d6d3ce16999a/own_the_day_own_your_life_accompanying.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b611ab4-07a4-4ea3-bbf2-39e7e72e9a66/2011_nissan_juke_repair_manual_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f8895c8-ef42-4f3f-9d4c-2210642b491b/how_to_get_my_cursor_back_on_lenovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4038ece2-b43f-4e89-a3d5-aa4189203133/tosilod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4a33469-703c-4d31-906c-fc3b5c6624e0/wekuviwevaneke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08a7b7d9-b032-4ef7-8320-ea873cf46492/44181852767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68c59a56-daf8-4cd6-b281-c1f1e279cb42/how_to_add_pictures_on_top_of_pictures_instagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8102c65-491d-44e7-9df2-3fb53d77bf80/gonokenazinefogox.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_off00010510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10510 5008 bytes
SHA-256: 5d60778f17bfd87202dee99f895fc83410a47bc8df52cacafea6947f8d435642
font_01_sfnt_off0001163d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1163D 11352 bytes
SHA-256: 116c21ce6fd7a69a36170daddd240dfad2c55ae9e619ba69ad764dd246a42f55
font_02_sfnt_off00013c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C8F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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