PDF malware analysis — malicious · b3047d6ea5204144

MALICIOUS

PDF

74.7 KB Created: 2021-03-05 13:06:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: 6f78ad28535790a4bc489250d133309a SHA-1: 5b7bbebf3d6e47d28fd5ca72db30e9d128b4bd78 SHA-256: b3047d6ea5204144efbeddbf95430f63013febd8a8babb898cd67d4fb2576471

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file exhibits characteristics of a link farm, with numerous external URIs pointing to various websites, many of which are hosted on disposable domains or services. The primary heuristic firings indicate a malicious PDF designed to distribute content or redirect users, with ClamAV flagging it as a phishing trojan. The embedded URLs suggest an attempt to drive traffic to potentially malicious sites, possibly for SEO-based phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
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://soxebez.ru/wix?keyword=cisco+asa+5505+user+manual PDF link annotation
- https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/01456c3.pdfIn PDF document text
- https://xopavomubikun.weebly.com/uploads/1/3/4/8/134879687/weluma.pdfIn PDF document text
- https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/4608540.pdfIn PDF document text
- http://kezedidakopu.iblogger.org/36504946301.pdfIn PDF document text
- https://xijofufakeziti.weebly.com/uploads/1/3/1/3/131380729/1264135.pdfIn PDF document text
- http://xeboxemovev.66ghz.com/mejores_cursos_de_ingles_online_chile.pdfIn PDF document text
- https://ziduxaxeg.weebly.com/uploads/1/3/1/3/131380546/susajuvoxeli.pdfIn PDF document text
- https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/gokuje.pdfIn PDF document text
- https://nasuxixogidipan.weebly.com/uploads/1/3/4/7/134701521/73263.pdfIn PDF document text
- http://jonimowar.iblogger.org/rujeroni.pdfIn PDF document text
- https://dowusezawidi.weebly.com/uploads/1/3/3/9/133997386/5c71e9ce0ef.pdfIn PDF document text
- https://surujesuf.weebly.com/uploads/1/3/4/7/134773125/1783401.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/sifawekujiki/zujigevisomunupuvazadak.pdfIn PDF document text
- http://gezojetisab.epizy.com/lg_32lf500b_price.pdfIn PDF document text
- https://8eeb1f0a-0cdd-4c66-98a4-83777b49fb54.filesusr.com/ugd/64f9d2_4d46746b39c043c382ece8d98bd86d6b.pdf?index=trueIn PDF document text
- http://renowujemunada.epizy.com/26420229511.pdfIn PDF document text
- http://xizokokov.epizy.com/xoxorejerovekowazadizivon.pdfIn PDF document text
- https://s3.amazonaws.com/dewutexorob/damusolelinejura.pdfIn PDF document text
- http://dokelegusipodi.epizy.com/physician_desk_reference_2021.pdfIn PDF document text
- https://abaaaae4-9231-44fc-b12c-ad55ebcc68e7.filesusr.com/ugd/2ca09c_92c87c5eef664af1b2d3befe6074c120.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tazopaju/missouri_river_fishing_report_montana.pdfIn PDF document text
- https://s3.amazonaws.com/vojapu/pevovosivoviloruguf.pdfIn PDF document text
- https://ec451167-49e0-489e-a150-d7dc0ecf9264.filesusr.com/ugd/fe0276_c62cd6256a7948988f9faa12aaf7046e.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e900.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE900	5116 bytes
SHA-256: `652750404c2ddb760958f3823b19156707c45c1505ae7a5705a2433f6d9fa280`
`font_01_sfnt_off0000fa4e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA4E	10240 bytes
SHA-256: `18c3831f8ad7658676bf29bd98a0c7f8778255d82d1ec716c33db2efaac0fb8d`

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