PDF malware analysis — malicious · 43f8455540d90791

MALICIOUS

PDF

57.4 KB Created: 2020-10-16 08:58:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: f29ec30b000f4ab2abd7bf7a4608fa90 SHA-1: 7cce97d23b3b6a3a396854e36ad436a01afb5d8f SHA-256: 43f8455540d90791f3c498219baa81af066758be0c9357cfab97171f2df9f783

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded links, many of which point to disposable hosting services and redirector infrastructure. One prominent URL, https://gettraff.ru/123?keyword=hamlet+summary+pdf+free+download, is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain similar URLs, suggesting a link farm designed to drive traffic to malicious sites, likely for SEO poisoning or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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://gettraff.ru/123?keyword=hamlet+summary+pdf+free+download In PDF document text
- https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/muresajuvarukepu.pdfIn PDF document text
- https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/gapovowumepekegosiza.pdfIn PDF document text
- https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/nesubine.pdfIn PDF document text
- https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/ef865a0.pdfIn PDF document text
- https://tiwilofudux.weebly.com/uploads/1/3/1/6/131606348/8759e3d7ba2b.pdfIn PDF document text
- https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/2592109.pdfIn PDF document text
- https://tavumake.weebly.com/uploads/1/3/2/7/132740551/9531917.pdfIn PDF document text
- https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/a4eeddb.pdfIn PDF document text
- https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bf4458.pdfIn PDF document text
- https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/6452702.pdfIn PDF document text
- https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/71adbf4216c214.pdfIn PDF document text
- https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/613a711ec7ef.pdfIn PDF document text
- https://fusesekomufe.weebly.com/uploads/1/3/1/6/131606177/41276293.pdfIn PDF document text
- https://varipejat.weebly.com/uploads/1/3/0/7/130739080/9334890.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366965/normal_5f8751fd24eeb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367299/normal_5f8753f218930.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365552/normal_5f8706a228e8c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369149/normal_5f88a909005a6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371261/normal_5f8905a143eb5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368985/normal_5f88b3c01478b.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/b8421ab6-4ae7-48fa-a126-48b09a3a14d8/tejax.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f200deb9-0407-4d30-aa6c-fa647f6bcb1b/fuluxodud.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5d982b39-89f5-489b-bf5d-f569409d4f70/85630199474.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn 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_off000091b1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91B1	6548 bytes
SHA-256: `96dd2fc0f29e4e72cc5c2e2558c4128b545e184584c6e82281828d37e57e44b6`
`font_01_sfnt_off0000a207.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA207	5344 bytes
SHA-256: `962786268155a0a9971c6cdb5cfea8e1920142898cb82f502ad6aa127d4973c5`
`font_02_sfnt_off0000b437.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB437	10332 bytes
SHA-256: `f0c762fd7ff4198bdc5f1facfafd32f3da8da94b561dddf71c217057cfa02c4f`

Open this report in the interactive analyzer, or submit your own file for analysis.