PDF malware analysis — malicious · 92c86a15416eb827

MALICIOUS

PDF

65.4 KB Created: 2020-10-25 03:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23

MD5: edf7771d36bd9a29d1e96e7e152b6376 SHA-1: 31c3ad91ed3b6bfd3ed3a690a254519f0dae9c79 SHA-256: 92c86a15416eb827da98f48d5e0f3108647688af91db34205b8b34e7171f1b3b

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.me/123?keyword=hundred+soul+android+download In PDF document text
- https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/duwivif.pdfIn PDF document text
- https://vejegiraforid.weebly.com/uploads/1/3/4/3/134311029/xesezafaxefiji.pdfIn PDF document text
- https://wufikasokuwomoz.weebly.com/uploads/1/3/4/3/134359410/mutusuro.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416504/normal_5f94b6ebd41a6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369626/normal_5f8f1d2a7cb1f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378149/normal_5f94c1f7d8035.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383450/normal_5f8c6e68e8883.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382781/normal_5f8cba5a93ce4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383703/normal_5f91082d65b70.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385436/normal_5f90d1c62fdb1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372360/normal_5f8cc40b8698e.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/1/0436/1938/5502/files/mapuvuwizulitapozokukabiw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9893/0341/files/38763447709.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fb4a2974-c0b9-447f-9f57-34863ffb8324/mizaluzilekitosak.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/39321ab3-c996-4127-9f86-440e142d45c8/marediropijisefunezatorip.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0480/3398/8767/files/52569493668.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/0683/4839/files/22492735396.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/3952/1430/files/86076519962.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/3381/9808/files/mongolia_vacation_travel_video_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/8314/3602/files/kugew.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000074e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x74E5	17436 bytes
SHA-256: `031251d8f82b0151fdf7ca417f4884ad363a89334013329b3167bab642c64ce7`
`font_01_sfnt_off0000ab69.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB69	4872 bytes
SHA-256: `5a4d710a2d95499178e25c2af54083e3728f06a0e20e01c8d0d41ce7b8001854`
`font_02_sfnt_off0000bc17.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBC17	10800 bytes
SHA-256: `1fb1a72ecb86b2acc277e60cbcba34d05051dbf23c7a50db269e35ef6e5cecee`
`font_03_sfnt_off0000e0a0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0A0	16164 bytes
SHA-256: `88c3c370bc217ce99402004a4f0b15234af75785b8fae5360a4d1f01bd4ac368`

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