PDF malware analysis — malicious · e5fbc92e28cb9973

MALICIOUS

PDF

38.9 KB Created: 2020-10-18 00:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: a6a22e6cd50b16f76fc7a3f75f0d66de SHA-1: 0702cc1409d0017cb86c9dd49969a2c872c77895 SHA-256: e5fbc92e28cb99739f5174956c4919eff0153402d46837069059d643daa1e9dc

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://cctraff.ru/strik?keyword=political+caricature+by+alfred+mccoy In PDF document text
- https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/7254159.pdfIn PDF document text
- https://rokolumer.weebly.com/uploads/1/3/0/9/130969153/f2b5007e1a635c6.pdfIn PDF document text
- https://runebipunozup.weebly.com/uploads/1/3/1/4/131406604/7489982.pdfIn PDF document text
- https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/e860179995909.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368469/normal_5f8b5bbd5095f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371524/normal_5f8b5b549cc01.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365549/normal_5f8711c05c7e9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366388/normal_5f87473c3a348.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368977/normal_5f878e195c159.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://cdn.shopify.com/s/files/1/0493/2032/9375/files/84109943053.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/3838/4543/files/mega_filmes_hd_apk_ios.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3097/7434/files/remstar_pro_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8271/1201/files/vector_calculus_4th_edition_by_susan_jane_colley.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0485/2622/9666/files/nozowisufodogatopomozes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/7427/2408/files/letters_from_christopher_by_cheryln_cadle.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/9331/0631/files/honda_ecm_2800_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0458/2860/4067/files/network_components_definition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0058/5636/files/kowimexibikawibizobeko.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4816/3738/files/derechos_humanos_universales_articulos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/6474/1026/files/saxuri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/1164/3304/files/89873795518.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/2148/7256/files/kolapifasipo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1624/0807/files/zetusinuvij.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_off00004f66.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4F66	5008 bytes
SHA-256: `e532d044ed842fd0fedda7400095fd8272294cb5fe835a9b47f6385c37e11b7a`
`font_01_sfnt_off00006073.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6073	9144 bytes
SHA-256: `d1627343632e03b5e0c18bad81ea98a46b8e3a1a729587892894d4e5b4ef9b38`
`font_02_sfnt_off00007fd3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FD3	4324 bytes
SHA-256: `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`

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