PDF malware analysis — malicious · 74ff5a3f4da28288

MALICIOUS

PDF

35.2 KB Created: 2020-11-08 12:32:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 442ce5daecc117bc2a4dc2eee95498ab SHA-1: ace82f383cf18ea72d6af220c37548187316e6f3 SHA-256: 74ff5a3f4da28288b49615ad8ae7de9e0d20166fe350f737aa3ca5c8eb7234ff

76 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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://traffset.ru/aws?keyword=cedar+park+elementary+apple+valley+minnesota PDF link annotation
- https://cdn-cms.f-static.net/uploads/4382192/normal_5f91ef0416c30.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369146/normal_5f8c0235c44c6.pdfIn PDF document text
- https://romovemesokawaj.weebly.com/uploads/1/3/4/4/134479736/rinegibor.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369163/normal_5f89c45e874f0.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://fazojikimugu656942302.files.wordpress.com/2020/11/kubaliwajif.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/85c8fd45-01d2-48ff-8239-5bcbaa9ba72b/59667695442.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1311f067-c6c9-4d70-8a95-7d29c4e5cb4c/gekij.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/27ff1b09-d051-487d-b2a8-dfa761f7ba96/76671077425.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/24470ca7-dff1-464c-9d1c-f5ca8daeea7d/17th_year_wedding_anniversary_gifts_for_wife.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/67bcb1c7-54e4-48df-93d2-0af913328c39/vejeletiwitukifoboketujov.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000047f4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x47F4	5236 bytes
SHA-256: `b8dd05efe2166bcb05be2be1d50f82aa6256ac739e11e0db10bc103d4f3ca5b9`
`font_01_sfnt_off000059b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x59B9	10864 bytes
SHA-256: `2b22352b3e3350702e4a351d3c4e8d76063694b1c107b675364ec741cd8e32b0`

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