PDF malware analysis — malicious · eb1768560f7e5cc2

MALICIOUS

PDF

36.5 KB Created: 2020-10-29 19:06:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 8f491965dcda9f0ee854f7090326cba0 SHA-1: 94de041640f6f4252fd881f5899855882d5c75e8 SHA-256: eb1768560f7e5cc2e000bc0320e9fafec07d6a45e40bf3e3525ca0cf37fcbd26

94 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://ttraff.link/123?keyword=415+area+code+zip+code'. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains references to URLs, reinforcing the malicious redirector finding. The primary attack vector appears to be luring the user to a malicious site via the embedded link.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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://ttraff.link/123?keyword=415+area+code+zip+code In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/1876/2440/files/88330248427.pdfIn PDF document text
- https://s3.amazonaws.com/fikuvine/fereveliwepaxuwoguresizop.pdfIn PDF document text
- https://s3.amazonaws.com/divexikav/xonuf.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files/lenenijoxig.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/01456808-8259-40d7-818b-d6535411cc9d/98798486645.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/3154/1952/files/46041104378.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b0c2c60c-347e-4b2c-b2f1-c4a0c2557f63/73550073941.pdfIn PDF document text
- https://s3.amazonaws.com/netinuwa/castle_of_glass_album.pdfIn PDF document text
- https://s3.amazonaws.com/zidenigad/spinal_and_epidural_anesthesia.pdfIn PDF document text
- https://s3.amazonaws.com/tanikanaw/87680288255.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/3218/9379/files/8507744252.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000051df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x51DF	5076 bytes
SHA-256: `c67886859968e3cc0fb959eb2c02806f0359830d65439f4eb1cc4bfad513c109`
`font_01_sfnt_off00006346.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6346	10124 bytes
SHA-256: `01f725b72ceaf070a5b989111855a45f80cb83924d5b93a0f313bd4a40e01fdb`

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