Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe22f8d829fb4ac…

MALICIOUS

PDF

297.7 KB Created: 2021-03-18 10:31:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d27c610553caa51c7dc268fd2b275851 SHA-1: 8f0c6d60a5f537213277eafb9419c0c388be56e8 SHA-256: dbe22f8d829fb4acc5b3aeb65fce45b3c70ace5e8c6c30fb33c7496bfd6c258b
104 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. It uses an urgency-based lure. 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 0.9963

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://crophysi.ru/wix?keyword=ch+23+political+paralysis+in+the+gilded+age PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408464/normal_603d2ea65f53a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470027/normal_5fca97dc7dd76.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeforms.com/rocket_launch_live_stream_youtubevqysp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5fdd32417cc67.pdfIn PDF document text
    • http://worldworkbook.com/how_to_reset_my_huawei_tracfoneymau4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390382/normal_5fde61d6b2932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_603e185094102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406782/normal_6034264145d91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423166/normal_603181d3a3f8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383586/normal_603c38a852a99.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/kisagoz/digital_tv_guide_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/029c27ba-aec1-4035-94d2-4282092b357f/52268109247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3f06df8-2619-4574-800a-03d46512f6e1/tabiwedufowo.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/pesejobatofofuko.pdfIn PDF document text
    • https://5849b288-062f-49f8-a71b-da420f1f00fd.filesusr.com/ugd/c068f8_026dfdcc1ad848bb99d47b8752a79e90.pdf?index=trueIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_1f6fa8e3f05d4782815fac73a075a763.pdf?index=trueIn PDF document text
    • https://61df3396-90b5-4b69-a3ae-475c9da6ebc5.filesusr.com/ugd/516574_cece33c4652d4513bdbc26e724e57299.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/adler_mannheim_spielplan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903013d8-46f6-45c9-b3ef-4f0e951d4c1b/what_are_the_names_of_the_minor_greek_gods.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_off00045d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45D18 5636 bytes
SHA-256: ff6fd002751941a57760342a05ec227dc994001c3c5d803177030fb2f38e314c
font_01_sfnt_off00047040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47040 11860 bytes
SHA-256: 53377ee24d4dcb2698779a48620542f5394cd4c0ff7e83dd253932441ef57f63

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