Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f38ddc747bed193…

MALICIOUS

PDF

68.5 KB Created: 2021-02-05 10:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 30b7cc1dcab5a4a54790f649e2d8e1e2 SHA-1: 5f769c0414d8a9d48e9e3d386726d930dcc88a0c SHA-256: 0f38ddc747bed19361c617ca82aea5126963376467b93a945b2b92be9b5ba781
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure, likely attempting to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wb?keyword=peptic%20ulcer%20pdf%202018 PDF link annotation
    • http://shimano-stradic.ru/godkar_pathology_bookq1aam.pdfIn PDF document text
    • https://cdn.sqhk.co/keliziniw/jQgjibH/letaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468820/normal_601ae9c7ad6c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403818/normal_5fc5c67f3a6ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478422/normal_5fe13bbc6706a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490720/normal_6017015371ca3.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/AgdbVhf/gijuzutakorelogodaloxofu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411245/normal_5fe330b769af8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407057/normal_5fd8163a251af.pdfIn PDF document text
    • http://musofiron.ru/26869324582qkjnu.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwilaj/Vpgi6gg/i_wish_quotes_about_friends.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403688/normal_5fe0e77a2cdcd.pdfIn PDF document text
    • https://cdn.sqhk.co/lonuxonemor/7alDFCW/zeus_tattoo_designs_drawing.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424953/normal_600414445fa65.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/SKjiU3q/vejemomazonurebiwodulol.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/HkghRgc/zombie_defence_2_episode_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xanodujijefu/FGjbud7/62383529034.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448718/normal_5fc74b487cf78.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E8 5284 bytes
SHA-256: c1492f2444b832c66b5d7d510febfd0cc1990f710d301e3ec1ccc3f11d2eeda0
font_01_sfnt_off0000e2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FF 10032 bytes
SHA-256: ea336f3f70f9db47f036465b9ccde30e7dd2ffc24deba2475a7552c8f79baf83

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