Malicious PDF — malware analysis report

Static analysis result for SHA-256 78fa146fa7c5477c…

MALICIOUS

PDF

77.6 KB Created: 2020-11-19 07:15:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f4b929dab08d94fc012c30e2b7520c14 SHA-1: d686ec6c5e1da3d808919ae3557b5f3c11e45d8f SHA-256: 78fa146fa7c5477cc783956a07a742ba6916ce8a34e1974b1a52e1887b745e79
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://ggtraff.ru/strik?utm_term=fire+emblem+sword+of+seal+rom' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest an attempt to lure the user to a compromised site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • 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://ggtraff.ru/strik?utm_term=fire+emblem+sword+of+seal+rom In PDF document text
    • https://cdn-cms.f-static.net/uploads/4448733/normal_5fa118d30cfbd.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/6758202887.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/desert_animals_worksheet_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/59576558719.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/english_worksheets_upper_intermediate.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/keepvid_apk_official.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/counting_on_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/90542156430.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/weather_report_for_cedar_falls_iowa.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/rediwowubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/673278e6-5776-4889-b024-b4a60f32960f/husky_power_washer_1750_gun.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0B 3780 bytes
SHA-256: fb22fb0f827d640fb2c865d584120b6007a9234dbdf57cc8e48ec5f4d6217881
font_01_sfnt_off0000db85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB85 5240 bytes
SHA-256: 0b93f3b61ac99feec69d072571001c4cb05868ef225f14fb81a232d14bf78797
font_02_sfnt_off0000ed4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4D 10904 bytes
SHA-256: 7901a141e899f4eb90f7f1accb5d9d5ad802d49384f0363781540bac022f6a59
font_03_sfnt_off00011246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11246 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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