PDF malware analysis — malicious · 1a0998f4025160de

MALICIOUS

PDF

58.9 KB Created: 2020-10-18 00:35:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: 713184f64337a64eeeb16b7c3e1e2693 SHA-1: be04e94b45f40c0525e86576a17676c2d77facb7 SHA-256: 1a0998f4025160de5864ddda915b625dad031fbe115ae8f8ee0a2f64fcb3798b

194 Risk Score

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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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=sabriel+garth+nix+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4365626/normal_5f8933b5c7b98.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368504/normal_5f8b5b5949569.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379049/normal_5f8b17713471a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365659/normal_5f8722a2e6b92.pdfIn PDF document text
- https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/6903599.pdfIn PDF document text
- https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/jakodupanuwolo_buzupagereke.pdfIn PDF document text
- https://defelewag.weebly.com/uploads/1/3/2/7/132741475/3431893.pdfIn PDF document text
- https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/mirepexi-tavajatixotama-nedud-zemutini.pdfIn PDF document text
- https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/4202832.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366311/normal_5f8729fc73d37.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366364/normal_5f8b639dc469a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369927/normal_5f8ab414719dc.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/a4072c96-d90b-4922-ba71-4e329a4bd60f/dipopopab.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1aed9788-f880-4bcf-b28f-efb1fc5ce61d/finding_nemo_full_movie_watch_online.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ffa7c547-0d69-4b8f-b76b-c180a26025d8/kamekid.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/99785af8-438e-43be-b99f-26a245f1f922/degagonaxusudevosameravo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7cdcf13d-d1df-461a-8de6-c8dad7006d75/49008538933.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_off00009a2b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A2B	5112 bytes
SHA-256: `1317ab793644735a78ecf840315545403ec67d57930de1e8153f63b0c2e6d8fc`
`font_01_sfnt_off0000ab76.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB76	11116 bytes
SHA-256: `73249f26a22001a7d90a3001110a60bf2e8aa703afe71fe92a1a08f930c6e44e`
`font_02_sfnt_off0000cfe6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCFE6	4324 bytes
SHA-256: `ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230`

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