PDF malware analysis — malicious · 3bdac05f8aed5287

MALICIOUS

PDF

61.7 KB Created: 2020-11-09 08:59:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 6a97e9f7be77d14ea8651c2fa819c58b SHA-1: ffc0ab2b0b080356d8f4bf8ae2a2103a06212a33 SHA-256: 3bdac05f8aed5287074a3ddf11178c66d73166b07bf8bec51369aa539120d6e0

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://trafffi.ru/123?keyword=tell+me+about+yourself+worksheet PDF link annotation
- https://cdn-cms.f-static.net/uploads/4381532/normal_5f94716624bc1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408720/normal_5f986d21a4835.pdfIn PDF document text
- https://folanejo.weebly.com/uploads/1/3/0/7/130776558/3572598.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368977/normal_5f89a4dc5f7bf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413373/normal_5fa8001684c1d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410952/normal_5f9be06273718.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393511/normal_5f9483fc8cb2a.pdfIn PDF document text
- https://witirasa.weebly.com/uploads/1/3/4/5/134525236/3645f21313be93.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/86d82a77-6558-402f-a811-cb8aa4e87251/dolelukemexarejikesode.pdfIn PDF document text
- https://bakazowoti.files.wordpress.com/2020/11/filomikadudifutusejujobu.pdfIn PDF document text
- https://zomizekakigo.files.wordpress.com/2020/11/fitis.pdfIn PDF document text
- https://vamemileja.files.wordpress.com/2020/11/8265589573.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_off0000ae6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAE6F	5352 bytes
SHA-256: `d6291f198ef5892bd6355b193f11953f7b798c8b2bf911eb6ddd9194db376de9`
`font_01_sfnt_off0000c08b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC08B	14184 bytes
SHA-256: `5dee730bf354fd43d735ef7a9b45641745e148112a41d7031aa28930b8d13d8d`

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