PDF malware analysis — malicious · 38aab14f7a1c1c40

MALICIOUS

PDF

53.4 KB Created: 2020-10-29 11:02:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: c776f0932858951adaea27287fbe30ad SHA-1: b6d7ae1856865ddeb0015445cbaaaa8f8d5c5929 SHA-256: 38aab14f7a1c1c4082e24f8d8e6ba8b1c3791d25c4a22a4e21b5033dc18e6244

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://gettraff.ru/strik?keyword=google+drive+mom+2017+movie In PDF document text
- https://cdn-cms.f-static.net/uploads/4381976/normal_5f8bd321f3b4b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383680/normal_5f9574b026b98.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383792/normal_5f99d32c992ca.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/kufazete/33948839607.pdfIn PDF document text
- https://s3.amazonaws.com/miwolezedubujoz/vadotobaxupezutikuketir.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/fish_parasitic_diseases.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/3266/4990/files/bellair_airporter_shuttle_schedule.pdfIn PDF document text
- https://s3.amazonaws.com/memul/advanced_ms_excel_2016.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dae77d26-fe22-478c-84d2-73bb32d394b7/26514628379.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/4254/9145/files/dalabado.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/10b48a3a-50c8-4216-b03a-fcc38c081e70/how_to_get_karin_kuruma_gta_5.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/2170/5631/files/6135032199.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/binem.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/konsep_biaya_dan_sistem_akuntansi_biaya.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/07354b5a-1c23-4a8b-81ee-4ed2d59ba77e/galusujavo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3a4c238e-c1aa-4f4c-92ee-92616b1d92ea/29067262148.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e188288a-648d-4816-92ab-7b7a442f8e58/remeze.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f8626ae4-bc74-45e2-bb8d-60ff21644336/videjupurivufetowo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6370778c-b3cb-472d-96c1-d249bf21dc0e/45021672735.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/3157/8782/files/vabewumewuziwejaderesegem.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/3041/2949/files/amar_bail_novel_online_reading.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007a86.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A86	5256 bytes
SHA-256: `089ba952f6e91bcf13de061a659faffa438348fc637d1a9bdbf7bd894a322dec`
`font_01_sfnt_off00008c69.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C69	10716 bytes
SHA-256: `c8f76e05cbb5f75ae893324d2e0dcbe9c6812a03014513a0ed5db8c388ebf82c`
`font_02_sfnt_off0000b15a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB15A	16164 bytes
SHA-256: `ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1`

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