PDF malware analysis — malicious · af28d65e45bbc5a8

MALICIOUS

PDF

54.9 KB Created: 2020-10-28 13:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: c48a2b5212d6ba92ce25c929ee8dc794 SHA-1: 50c3c01e6b440afabc1742a5f948ba4561f8deaa SHA-256: af28d65e45bbc5a8dc95fb98dc82cd79032e6f5678ec18b9c4fae9787613b87b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.club'. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to redirect the user to a malicious site, likely for phishing or malware distribution. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent.

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.club/123?keyword=what+is+pertaining+to+the+heart In PDF document text
- https://cdn-cms.f-static.net/uploads/4378157/normal_5f8b28487ae90.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378846/normal_5f8b4fdb03d86.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366388/normal_5f871cbb66c0b.pdfIn PDF document text
- https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/de9abceb50544.pdfIn PDF document text
- https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/6e709fdda73c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369328/normal_5f8ac7809e332.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388282/normal_5f8d7b57b1f1a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371246/normal_5f8a1cf1a74c3.pdfIn PDF document text
- https://soxajenukaru.weebly.com/uploads/1/3/0/8/130874283/62708e.pdfIn PDF document text
- https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/naridikimit_sedisojatosono_fefobozozom_natuk.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393779/normal_5f97ca110065b.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/pujinit/38334729763.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/79e903b0-6576-469a-b24a-9b3e50e8db95/mario_kart_wii_characters_stats.pdfIn PDF document text
- https://s3.amazonaws.com/gupuso/xibirozavode.pdfIn PDF document text
- https://s3.amazonaws.com/jiguwuzobozobaz/kudesiwuwogepokivoxa.pdfIn PDF document text
- https://s3.amazonaws.com/luxelula/zetat.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9064ea13-5d7c-4ffb-98bb-5985788579ab/24264465436.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/the_anti_estrogenic_diet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/05ca273d-e24b-4e10-ab85-4b4633f8a789/fundamentos_de_la_administracion_lou.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a044bc49-c443-4947-9032-59555ffae3e7/8734715755.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/38d4629a-6084-4336-b19a-bb7c3f30ba8b/dozokemazagojomibemaniru.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c5189f54-89f0-4660-89e9-3cdea770e236/30128328026.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008a78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A78	4852 bytes
SHA-256: `dd5c20de7008b9ff0d6df363c60f106532805911a2b1c2303680e4bcb074bf31`
`font_01_sfnt_off00009af4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9AF4	10756 bytes
SHA-256: `5ff3ca98d85d7d2f05d435850b28f2e65a019737c47730197a840e924b6c24e1`
`font_02_sfnt_off0000bfd1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBFD1	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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