Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc66ecda211fb67…

MALICIOUS

PDF

75.7 KB Created: 2021-01-06 07:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 726b3141fada6dd0536f8c3aa7c9159f SHA-1: 874b00201d1de11e183d7d17f3cca1fe0611e86c SHA-256: dcc66ecda211fb678f18177c9b9c402c05cdf827d83ee725e6c27ca819bbfcd1
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 0.9997

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://trafffe.ru/aws?utm_term=lands+end+returns+form PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389352/normal_5fbd012e8073e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413973/normal_5f98eb0cc185f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f89d1e4108c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484639/normal_5fe66a7f2f916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382193/normal_5fe981f6ecdd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407997/normal_5fc2744494751.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/1b8a7d06-27a8-4b9e-96fe-794157b6abdb/breville_juicer_bje510xl_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67ca402b-e27c-4b90-9105-5ace99085d39/benchmark_fractions_worksheets_3rd_g.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96aa9732-23e7-4a30-93d2-898533eb527c/diablo_3_season_13_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/caspian_report_book_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0455f74-66e6-49c5-abde-5da41208a61b/vuwaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ae95d60-a49f-4b10-a493-b1d044513c65/lawn_bowling_game_crossword.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0a10c7b-7f57-41d9-ae5d-9282fa40e289/is_romwe_safe_reddit.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_off0000de71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE71 4796 bytes
SHA-256: 2466f43e2326ce885744db4892b73dfda8b4589918d8f6b5a9b9ea4009f3ec87
font_01_sfnt_off0000ee9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9D 11060 bytes
SHA-256: 20017e26917833166c921bb5133869075e122dfd2fde8da39089dd610d3a4db5
font_02_sfnt_off0001144a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1144A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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