Malicious PDF — malware analysis report

Static analysis result for SHA-256 59d9a4a127534f10…

MALICIOUS

PDF

72.2 KB Created: 2020-12-23 07:07:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d6d6359d47654e14760b7a485dd0f5c7 SHA-1: c84ea872263c42ca2b5a9c9042e9a4bf224b6bec SHA-256: 59d9a4a127534f100f07c554283e9fc534bbdc792c8952210ec8bee02cbe8ca0
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically 'https://gettraff.ru/strik?utm_term=maze+runner+3+trailer+reaction'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'Maze runner 3 trailer reaction', suggesting a lure to disguise the malicious link. The presence of embedded URLs and the overall nature of the findings point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?utm_term=maze+runner+3+trailer+reaction In PDF document text
    • https://labopepiw.weebly.com/uploads/1/3/4/7/134747507/4547226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416316/normal_5fa948c069360.pdfIn PDF document text
    • https://dekedenavit.weebly.com/uploads/1/3/4/6/134612093/d6f545.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383923/normal_5fe2b5465af62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387233/normal_5fad7bbee4e57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446165/normal_5f9ef47228d58.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/dazutun/tovefuge.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/85145624955.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/15022337750.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e6b1a13-b6d9-47f0-b836-413235e9c483/vugumipibotanobexavivime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0abfd941-0bef-4441-b6e2-065b4391d1ac/tifefuduxewos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2a692dcd53187f1e8c64/t/5fdd4f8bd85ca26442e7de89/1608339340081/fatosizev.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe19b28d4e90328e0bd50a7/t/5fe1bb4915fce75a50eb9564/1608629065408/healthy_and_unhealthy_food_worksheets_for_preschoolers.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/stem_and_leaf_worksheet_doc.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC700 4836 bytes
SHA-256: 713237d93d64aeada1687e6008dc20cae7121b7760569c7ff3b8cc4bf9a8abd5
font_01_sfnt_off0000d795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD795 11384 bytes
SHA-256: 72a993d80c53ad86313e18c2eceba7c1bf06704948710d25aca636618020f987
font_02_sfnt_off0000fe7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7C 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3

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