PDF malware analysis — malicious · df1bd3251e0de76f

MALICIOUS

PDF

61.0 KB Created: 2020-10-29 09:54:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23

MD5: c9c783b7efbf082222472591d26eadb4 SHA-1: 478444bbfe1122d4ce3c1244889242713f9cace5 SHA-256: df1bd3251e0de76f8ec9c19027155f405c5204d90db104148f0ac128898cc62a

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=betrayal+guide+3.10 In PDF document text
- https://labivuzixifazer.weebly.com/uploads/1/3/4/3/134310915/3578d7df97a5.pdfIn PDF document text
- https://newejata.weebly.com/uploads/1/3/3/9/133999860/c82f65e645101.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426675/normal_5f997e77f3ca1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402740/normal_5f93de4c08140.pdfIn PDF document text
- https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/5400212.pdfIn PDF document text
- https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/koxevijediri_lebufevolikada_puzufibogijosa_getipakov.pdfIn PDF document text
- https://dawugagulinejud.weebly.com/uploads/1/3/4/3/134368664/kebonitixe.pdfIn PDF document text
- https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/2579834.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372719/normal_5f8a0d8f35241.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379476/normal_5f90b39df0b6a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383340/normal_5f8c3e7816bae.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/zarusegibitumet/47791408178.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/5298/5251/files/fumasekoka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/2931/8813/files/77689064580.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3594/9218/files/st_benedict_medal_meaning.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1907/4722/files/volekijad.pdfIn PDF document text
- https://s3.amazonaws.com/zidosozawok/60270076596.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/2199/8496/files/oclusion_de_vena_retiniana.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5025/3979/files/civil_rights_act_1955_for_mppsc.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/9902/0187/files/vavexudofolinazagurer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/3167/3024/files/65192545995.pdfIn PDF document text
- https://s3.amazonaws.com/babetafaperaxov/xalijusumorejelowe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5820/0730/files/free_robux_2020_no_verification.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_off0000a10c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA10C	5020 bytes
SHA-256: `e775fc13635c73fdf293bd637490305702e7339fa3464af6f76514a30258bf23`
`font_01_sfnt_off0000b240.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB240	11164 bytes
SHA-256: `d87074c10fbd9b321e46f2c7894b3b2157f4c51e7fc6298b9f2bf0efe921ce28`
`font_02_sfnt_off0000d7e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7E0	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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