PDF malware analysis — malicious · efab683c6fff57b5

MALICIOUS

PDF

43.0 KB Created: 2020-11-01 17:24:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: c525781d0aaa13d3b45d3fe0bd292983 SHA-1: bea74ea94883d6e2868699864073d91a67670cf7 SHA-256: efab683c6fff57b521d5fafa288329ae7da140652b6b879c310400770ee4bb83

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.ru/123?keyword=delnet+pollination+bags In PDF document text
- https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/xejeda_netepegafezuzox.pdfIn PDF document text
- https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/8ac0a5db64.pdfIn PDF document text
- https://jutivodip.weebly.com/uploads/1/3/4/4/134489611/raxuvowutiluze-gupixose-kepix.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367013/normal_5f87480b1860d.pdfIn 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/1/0430/2602/2557/files/adams_12_staff_self_service.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/7853/1255/files/51028571729.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6425/2821/files/multiplexores_y_demultiplexores.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1675/7153/files/84743016439.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/1989/4425/files/digitech_vocalist_live_4.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/73311178067.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/1701/3912/files/41815942060.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_off00006840.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6840	5032 bytes
SHA-256: `d8995c6f4c391fece6843d7b1f1e75cfa2792a88fed1fbed70baf4982757ee69`
`font_01_sfnt_off00007973.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7973	11080 bytes
SHA-256: `80c8929721d9be8f5118432f07b925caf8239f5a235b4cac040e77ebb2c7e861`

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