PDF malware analysis — malicious · 8eda19a97cf533c6

MALICIOUS

PDF

72.7 KB Created: 2021-03-09 10:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 4309266c8b9eb9c52c88eb2dd3e91005 SHA-1: 1506f7f2708749bc3cf189e12757cd813a889bdb SHA-256: 8eda19a97cf533c64603d9f499441e76ede38a2f5c10f8941e41cb7fa31a0df4

74 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged as malicious by an ML classifier and exhibits characteristics of a link farm designed to redirect users to potentially harmful content. The presence of a 'download button' heuristic suggests a lure to trick users into downloading a payload. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate an attempt to exploit users through deceptive content, likely leading to a second-stage download or exploit.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://lozipotod.ru/wix?keyword=liftmaster+gate+opener+manual PDF link annotation
- https://cdn-cms.f-static.net/uploads/4406789/normal_600d3e0ae3171.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4451018/normal_5ff81a6807021.pdfIn PDF document text
- http://sekewutu.iblogger.org/29340321689.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4422390/normal_60082e04c838e.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369905/normal_5ff9003c78b58.pdfIn PDF document text
- https://mavuweginu.weebly.com/uploads/1/3/2/6/132681431/3122700.pdfIn PDF document text
- https://tazuwadafif.weebly.com/uploads/1/3/4/8/134857375/eda645b73.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482636/normal_6014dc71d8f21.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457876/normal_5fe8eff70fd4c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4494875/normal_5ff506b9a309f.pdfIn PDF document text
- https://xogepojofaridel.weebly.com/uploads/1/3/2/7/132741214/pubamilagirobetab.pdfIn PDF document text
- http://munumizirukotek.iblogger.org/batuberoxa.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://29159626-56e2-4eb2-a8c1-eb081f451e44.filesusr.com/ugd/a58502_96901870a8ad4791b8088c61a3c6c2ab.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jarawaxanivu/duzamofukowusarok.pdfIn PDF document text
- https://s3.amazonaws.com/gifojuxaxeva/niwotololuda.pdfIn PDF document text
- http://talusulimatedo.rf.gd/autodesk_3ds_max_trial_version_free.pdfIn PDF document text
- http://dutagewenurodub.epizy.com/35582334255.pdfIn PDF document text
- https://ed59cdd8-0d75-4634-8bb2-7afdb9da103e.filesusr.com/ugd/9cb112_207c2d0a0e6645bca5d2dfdbbeb40533.pdf?index=trueIn PDF document text
- http://fujesotes.epizy.com/what_is_the_purpose_of_the_rabbits_in_the_movie_us.pdfIn PDF document text
- https://8767aa75-4bd5-48c0-94ca-24e983238001.filesusr.com/ugd/debdc1_a241dfbe60a54af4ab94ea06d0eee3b6.pdf?index=trueIn PDF document text
- https://3228dc58-b2c1-4aed-ac20-03fc52793822.filesusr.com/ugd/43afbb_2aa69c3bd00d4ee4831a0dacb72c6ec5.pdf?index=trueIn 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_off0000d11c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD11C	5044 bytes
SHA-256: `99dad136437e93429f43b25be8d6cfb84be7fd4f052a58ea9186eca25e74a5ad`
`font_01_sfnt_off0000e228.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE228	10568 bytes
SHA-256: `ef1e090cc86cd80215424da2cf7536940598e4e475c562a960793876653d4f9f`
`font_02_sfnt_off000105fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x105FD	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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