PDF malware analysis — malicious · 2ae2413631db4ab0

MALICIOUS

PDF

43.3 KB Created: 2020-10-15 06:55:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: e155cc6c5281956a9a4833f7776d91e3 SHA-1: e8fcc0568a11dd49eb44a41afab548a1c5dde0d5 SHA-256: 2ae2413631db4ab08fa3f0f4689532034402fed0a57961cfc876ab3876328e37

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to disposable hosting and redirector infrastructure, indicating a link farm designed to distribute traffic to potentially malicious sites. The primary malicious redirector URL is https://ggtraff.ru/123?keyword=corazon+diario+de+un+ni%25C3%25B1o+pdf+download. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to lure users to malicious content, likely for phishing or malware distribution.

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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://ggtraff.ru/123?keyword=corazon+diario+de+un+ni%25C3%25B1o+pdf+download In PDF document text
- https://cdn-cms.f-static.net/uploads/4366406/normal_5f87bd106caa8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366399/normal_5f8719a8b4666.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367960/normal_5f8787ffbeafd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367004/normal_5f875e8db4552.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368977/normal_5f878e195c159.pdfIn PDF document text
- https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/fuvitagasebap-tigelamab-lozurasumosoxig-wiwozuvasowov.pdfIn PDF document text
- https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/romukara.pdfIn PDF document text
- https://pebiname.weebly.com/uploads/1/3/1/4/131453048/9678010a7ec.pdfIn PDF document text
- https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/nuxigorozaxigufola.pdfIn PDF document text
- https://jabiratunibi.weebly.com/uploads/1/3/2/6/132683422/2b2448b5ee1adc.pdfIn PDF document text
- https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/1890735.pdfIn PDF document text
- https://pebiname.weebly.com/uploads/1/3/1/4/131453048/dilukoka.pdfIn PDF document text
- https://site-1043798.mozfiles.com/files/1043798/39241441384.pdfIn PDF document text
- https://site-1036702.mozfiles.com/files/1036702/nugixopufididoxanolilu.pdfIn PDF document text
- https://site-1043564.mozfiles.com/files/1043564/14503759342.pdfIn PDF document text
- https://site-1038438.mozfiles.com/files/1038438/75212388276.pdfIn PDF document text
- https://site-1039754.mozfiles.com/files/1039754/marqueteria_planos_gratis.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://cdn.shopify.com/s/files/1/0499/1595/3320/files/33722249567.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/1260/6110/files/jeet_kune_do_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1363/5226/files/73750962566.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/8991/2491/files/tifatenunazaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5664/3739/files/gopher_winnie_the_pooh_mental_disorder.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/9915/9211/files/loxusixexitarogoselixaw.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_off00005a7c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A7C	5036 bytes
SHA-256: `a7123bb8aeea2696c1bc2015821b3d4ff363f9ab94ee6fd2e1d207f4f87ce913`
`font_01_sfnt_off00006b79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B79	11008 bytes
SHA-256: `519130cd7c891a988fd17d6b00e2694b1a9cd99e7161774dfb716583e1905000`
`font_02_sfnt_off00008f7b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F7B	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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