Malicious PDF — malware analysis report

Static analysis result for SHA-256 da0c425379de49b0…

MALICIOUS

PDF

73.7 KB Created: 2020-12-19 12:35:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2ea337ca4898f97b6ed6dbe1d7d060c6 SHA-1: 3b341c0cf1b896f26c471210f082e6ce617e2978 SHA-256: da0c425379de49b07b0317c19adc342c5105f9b4bbc151cd4b1bb93252f637a6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=sketch+ios+icons+template'. This indicates the document's primary purpose is to lure users to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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://gettraff.ru/aws?utm_term=sketch+ios+icons+template In PDF document text
    • https://lomojibopizan.weebly.com/uploads/1/3/4/8/134886372/dasikizuder.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://s3.amazonaws.com/jafujasiwetid/word_processing_activities_ks2.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/12458128706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60e4bde8-be5d-4d82-9cf5-f15311ee2a1c/63107806411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65b5ba31-84c6-4871-b04d-1830ea9616c6/icy_veins_tombs_of_terror_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/26317875943.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/39736699957.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cd9260f2895dc1e75cb0/t/5fd00cac7025b80c81744a52/1607470252549/59528551233.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8e4feab-36ec-4b6c-9fcc-f6ded14e4446/datasheet_555.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC833 5032 bytes
SHA-256: 86cce139dd9f60d54cbd6f0539ded7a01c56ad13c0d737d64022c58d69c686dc
font_01_sfnt_off0000d90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90A 3428 bytes
SHA-256: 71f50e694f2df458847b6d99f3adab5804824f80583cfb17f7d4e42e1e62728d
font_02_sfnt_off0000e6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BA 10920 bytes
SHA-256: 3c6000d400e2105b02cab19374abf49f55368ef79e092e3f606b691afce6b9d2
font_03_sfnt_off00010ba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA9 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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