PDF malware analysis — malicious · feafbe23e2cdbf6e

MALICIOUS

PDF

47.7 KB Created: 2020-10-18 01:19:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: d5d8c60392c0868d8f61569e04781f17 SHA-1: 6263c128d89db35cc15404003bcd58dd4c8b422b SHA-256: feafbe23e2cdbf6e68bcbd493f475ad163d61730d2701131135309bdf0716950

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 'ttraff.me'. This link is presented within the document body, disguised as educational material. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains. The ML classifier strongly indicates maliciousness, supporting the conclusion that this document is designed to redirect users to harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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://ttraff.me/123?keyword=road+signs+worksheets+for+preschoolers In PDF document text
- https://cdn-cms.f-static.net/uploads/4369486/normal_5f886794d1235.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370304/normal_5f8a519e2b013.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365546/normal_5f86fa7b8c8d0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369146/normal_5f88965ac1397.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368495/normal_5f880c0604f32.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366057/normal_5f879f2ad3ea7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371244/normal_5f897a4da86d5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366063/normal_5f873bbaf1296.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370529/normal_5f8b2600e109f.pdfIn PDF document text
- https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/51d06465e26ebbf.pdfIn PDF document text
- https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/ba365da.pdfIn PDF document text
- https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/lusexaxapel.pdfIn PDF document text
- https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/1d3c966cab70425.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379602/normal_5f8a6b1a568c3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366384/normal_5f8b6529673af.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366036/normal_5f8b1130908cf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365998/normal_5f8734b2dcd15.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370780/normal_5f8a4d909912d.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/1/0501/0279/6464/files/92525130898.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6627/7534/files/76671001833.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/7398/7244/files/a_room_of_ones_own_chapter_2.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0494/0365/8407/files/67382005344.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/0469/6997/files/tilij.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0477/5739/4076/files/52386396379.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1405/4300/files/7469002697.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/9661/9193/files/android_custom_dialog_style_example.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/6093/1991/files/sadikexepifiveri.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_off00007a61.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A61	5580 bytes
SHA-256: `840d2e96ed815c81f144dcc8bf6d5c5f4c723b6cee4dc2d711222b558898afa9`
`font_01_sfnt_off00008d6b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D6B	10412 bytes
SHA-256: `33c72863371a5b3430b99db2c85cd99c118c05e869d7395b7d21440b9f942d04`

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