PDF malware analysis — malicious · 79e3844db539124a

MALICIOUS

PDF

56.1 KB Created: 2020-10-26 15:01:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: 20d05f56b9ba096e680023c85ec58e95 SHA-1: 43c1aa6beb3e0c275bbc28dd198753abd89243ac SHA-256: 79e3844db539124a33eb92d823b8d5863f6b948cba81294c4d3acf0100fceefa

134 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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/aws?keyword=bhaktamar+stotra+in+sanskrit+pdf In PDF document text
- https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/nufupu-waler.pdfIn PDF document text
- https://xufiwelak.weebly.com/uploads/1/3/1/1/131164558/5079628.pdfIn PDF document text
- https://winugemu.weebly.com/uploads/1/3/1/0/131070294/jilufo-mivejilaxukuf-vajaxobonewij-valolisot.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412573/normal_5f961c1c271f4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385612/normal_5f908246306fe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373985/normal_5f8cc8bc782f3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374976/normal_5f891f80e61c0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366381/normal_5f8998e48bd0d.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/mutirexa/kutelezupiliremug.pdfIn PDF document text
- https://s3.amazonaws.com/wesezuzuvalirik/pikuw.pdfIn PDF document text
- https://s3.amazonaws.com/nigimul/lanasepeku.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/79432d90-1d91-4393-b7d3-d372d30dffa2/74181547834.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/db1554f5-74e0-4a39-a1d7-51aea298dfb0/pobekopikijojonolaba.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b35014ed-3bd3-4c12-9faa-f92b3a71066d/ripuvu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bf4291b8-0416-47dd-97a7-cad577061bb3/femuj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/57fe4b8f-7f48-4e5f-9005-585ec3a71fcb/voxiwixizojo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0492/2844/7900/files/philips_humidifier_2020_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1578/2048/files/xomafigilepolojomivini.pdfIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/14206372922.pdfIn PDF document text
- https://s3.amazonaws.com/mejigavukolu/deep_learning_free.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000083f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83F5	5032 bytes
SHA-256: `53d0c4021153bc112cd0232102ee11102864b3e75d2056bff75587f9100f21f2`
`font_01_sfnt_off000094da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x94DA	3740 bytes
SHA-256: `eb903a4bcabb0673128613fc2c6a3b3be6b6be0204d11159aa2f590e1d82ee93`
`font_02_sfnt_off0000a053.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA053	11008 bytes
SHA-256: `5c3d8d5ecd1083d32bcb4f080760562fef507d388ad99d6e5126e62241d725e7`
`font_03_sfnt_off0000c497.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC497	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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