PDF malware analysis — malicious · fc09c17064ce82f2

MALICIOUS

PDF

39.1 KB Created: 2020-10-28 07:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: cfaff55ec6ee65c1269bc371bdbcbbd4 SHA-1: 17ffa57d9c9de8b1829d9ba4c8999d9b1d07ff60 SHA-256: fc09c17064ce82f2e60fb531b03edbbbb9c758ba8bb178299e5e20da55c985cd

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to disposable hosting and redirector infrastructure. The primary malicious URL identified is 'https://ttraff.club/123?keyword=science+current+events+worksheet', which is flagged as a known malicious redirector. The document's structure and content suggest it is designed to lure users into clicking these links, likely as part of a phishing or scam campaign.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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=science+current+events+worksheet In PDF document text
- https://cdn-cms.f-static.net/uploads/4385011/normal_5f92f2d61de7b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393762/normal_5f933fde8838c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367294/normal_5f88e9bd68e5a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410013/normal_5f92d0f09d1ae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370269/normal_5f962afee71ab.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426267/normal_5f988684b9e20.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387430/normal_5f8f607f8de44.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371799/normal_5f8ede1a00990.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389085/normal_5f92426e379a3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381320/normal_5f8deccedce23.pdfIn PDF document text
- https://nagigezivozitos.weebly.com/uploads/1/3/4/3/134340852/213989d8063fa0.pdfIn PDF document text
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xizaxamuxive.pdfIn PDF document text
- https://semezuzuxikazug.weebly.com/uploads/1/3/4/2/134234688/bitop.pdfIn PDF document text
- https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/dipatuworal_dufusef_luvukup_godofow.pdfIn PDF document text
- https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/4390789.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://uploads.strikinglycdn.com/files/8a238ea2-21ff-4e8d-a5dd-e3b002390426/60272432225.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/74147571-8fbf-4592-877a-a4183c9bac13/rekorogadupug.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d2d66e83-1ba4-49a0-954c-1ac08bd84a6c/95969997370.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0470/9089/2958/files/15430459866.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4131/6264/files/plants_vs_zombies_lego_instructions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2779/1009/files/buku_andrea_hirata.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5427/7532/files/cuisinart_manual_food_chopper.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0479/1979/2294/files/sap_bo_data_services_installation_guide.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_off00004e3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E3A	4848 bytes
SHA-256: `fdee770b8d3ae58b7347d0f25a27934e8ae7775ffcc0c3c86fb984ba3e712fd8`
`font_01_sfnt_off00005eb7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5EB7	10300 bytes
SHA-256: `afda0f07f2f690cdef1dc5b4dc2c7342ac1273b39f43791eed0fe202cc9978ea`
`font_02_sfnt_off00007f26.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F26	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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