Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ac2451d624e186…

MALICIOUS

PDF

67.7 KB Created: 2021-01-06 20:04:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 999d3619fe2549794b9127a455184b2f SHA-1: 77c4571cee7a70cbe179ab90d86cc5117a94623f SHA-256: 30ac2451d624e186016afc5bd9b97485ee5e53a692d7b1041c1630e034e4c7af
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with one specifically identified as a malicious redirector. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a safety data sheet.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?utm_term=phenol+chloroform+safety+data+sheet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5f9067b5507b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384650/normal_5fe6331f80e7d.pdfIn PDF document text
    • https://zukikopan.weebly.com/uploads/1/3/0/7/130775822/21c6297e8d46ea.pdfIn PDF document text
    • https://jovegubegatok.weebly.com/uploads/1/3/5/3/135318826/ae88ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406213/normal_5f93c0f36e81c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405644/normal_5fa0ecf2c2af6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424025/normal_5fe92de0d370c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502188/normal_5fd65d7bafdbd.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/solonebosop/ruwako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c58b83d-d5b2-4665-9494-259004e29505/fuxivevegerupaka.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/95680731278.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/rebebubotolukoge.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/49255155568.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aaf598a-88eb-4ba4-810a-009742aac7a8/mekuvijaniwomizekiloxum.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/22515847790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df4f7256-379d-4e40-91b7-53c8db97be56/conjurer_pet_build_grim_dawn_2019.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_off0000cd56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD56 5364 bytes
SHA-256: 9a7e3398341d37f97f1d573ef23fcfc59b23f0a5245a378f3271c55bbfddb468
font_01_sfnt_off0000df6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6F 10032 bytes
SHA-256: 0e7e0fc21f6540c8fd7e0ab16d341e0e4d7b37ef4c826fef5b52a6dc0200b7e4

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