Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c81b5704aacb4ab…

MALICIOUS

PDF

69.1 KB Created: 2021-01-06 20:27:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a69e42436eef38821a6828042976e846 SHA-1: 27c9ce2083fa278213760d7c93f9de6757290a98 SHA-256: 9c81b5704aacb4abf2d2bf3c34e1b05b1d67dac1f371eb7b481fcfc23ae6dfa1
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 0.9998

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://traffnew.ru/aws?utm_term=platts+bunker+report PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4501810/normal_5ff59f7edf125.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385869/normal_5f8e2eb4325de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0199015b-caf2-4481-bccf-c52d16ff356a/john_lennon_imagine_mp3_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/94284377300.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/calcium_channel_blockers_drug_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c657accf-1949-41f4-9f6e-9009f156c9c1/french_to_english_translation_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeb015b7-7a70-4320-b95a-9b9d85df6187/journal_entry_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e7f7b37-4310-4167-92ba-807971110cd3/64119858627.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12b7da53-114f-42b9-83ab-75b1618b25d8/7424702270.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32a27de1-ab27-4703-a56d-b1ddfd6ea2c6/88718068923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2761e8d6-9a54-4d09-9e3b-04dbcaa01151/28480601874.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/waxowubo.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/animal_jam_newspaper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8786215d-5f5f-4e0c-b150-d1cde8dafb4d/79321890634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cfaadd7-2d97-44d7-9050-d83697b09466/gojutazebozetipoxajugax.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_off0000d13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13D 5016 bytes
SHA-256: 379b414a6d4a22e105896cbd158a3b931041b258b9dae32f14ca2f0ea04ce7c0
font_01_sfnt_off0000e257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE257 10944 bytes
SHA-256: 23e086ec5ae456369ed6b047073ee022934024be94a6db744a662a535283bca5

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