Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca93456fbd9245d…

MALICIOUS

PDF

425.1 KB Created: 2021-03-16 19:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0e00856068a08248d282acdb5e5cb9b1 SHA-1: ae35db8afe099cc139d11f0af0d69e5d1db8bfa8 SHA-256: 4ca93456fbd9245d4e624f226d0a1b3cdeade67488d18a4208b1564897cd7e9c
96 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. 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 0.9788

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=iso+9001+version+2015+pdf+arabic PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472204/normal_5fdb3c35b0184.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407571/normal_5fdb401a41633.pdfIn PDF document text
    • https://cdn.sqhk.co/sijaxovada/gjhigc7/laluf.pdfIn PDF document text
    • https://cdn.sqhk.co/wufotubi/fqifhfu/88148230948.pdfIn PDF document text
    • http://zumedemuruva.22web.org/45075388748.pdfIn PDF document text
    • http://buvemalo.66ghz.com/42802736816.pdfIn PDF document text
    • http://jusibebobekig.iblogger.org/free_algebra_tiles_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467306/normal_6012e90c50b3e.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/ho1nhe7/download_idle_infection_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/jcnibja/radar_mobile_speed_gun_with_camera.pdfIn PDF document text
    • https://cdn.sqhk.co/jevikepuja/ZHjURpo/mastermind_cast_animated.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480736/normal_5feeef4269e9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387698/normal_6026a67f35eaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407749/normal_600b542c2d410.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/2fbd86db-25cb-461e-87d3-d6e20c8fab62/tell_it_slant_longmire.pdfIn PDF document text
    • https://507f79ed-2408-4027-b124-45ed49bded7d.filesusr.com/ugd/2de61b_2d9c62c9f3b9459c88c9834ecaa74ad2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/76adfffb-ee6a-4bcb-9fd1-7a52192e46b3/62173371506.pdfIn PDF document text
    • https://356bbf58-84af-4bff-99a9-d03346e46411.filesusr.com/ugd/b5472a_5f71f0f9046443419430ac7a7e331e15.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2ef2b2d-9227-4cca-881c-e8175d74aeb0/what_is_shape_and_form_in_photography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa4a547-4d93-4211-8d9f-c32f0a9a8d19/xoxusinutofaj.pdfIn PDF document text
    • https://80820154-e864-4b0c-832b-212b24169927.filesusr.com/ugd/c12414_9f5cf17f5bb045029e87cdb658ccd99b.pdf?index=trueIn PDF document text
    • http://tunawuzitaxavu.rf.gd/design_is_a_job_audiobook.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off000649b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x649B2 34604 bytes
SHA-256: bbbf34c72b5602b2c62e0761edc7aa1639e6f38a2f08b0dfd45af9914c022547
font_00_sfnt_off00060121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60121 5568 bytes
SHA-256: fc0414b82df9084d19f4535b1b1724951f5f9c1b50eaf96fd3e3baff683b27ed
font_01_sfnt_off000613cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613CD 7376 bytes
SHA-256: ea63323b7d2162d9fd809483dc0c72c615c56a8feed13f1cc189204ee21ec625
font_02_sfnt_off000624dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624DD 10768 bytes
SHA-256: e7f74ec767032fd0899cd3ec6b633ccfb0ba31c9a5470ecf22996a1f35c4219a
font_04_sfnt_off000684d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684D8 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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