PDF malware analysis — malicious · bb96b63d84eae7d8

MALICIOUS

PDF

78.1 KB Created: 2021-03-20 00:59:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02

MD5: aa0452e40462dbca21aca136d3245963 SHA-1: 97e406a6c2906ac84ff54af2bf689ef19c138c48 SHA-256: bb96b63d84eae7d88ee9bc5c6813fce6b17444e19e2216987cc0b1ac4e06a0bb

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external URIs, many pointing to disposable hosting services, suggesting an attempt to manipulate search engine results or redirect users to potentially harmful content. The PDF's structure and the presence of many external links strongly indicate a malicious intent, likely related to phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/wix?keyword=partes+de+llanta+de+carro PDF link annotation
- https://rowimunikak.weebly.com/uploads/1/3/5/3/135346477/72e50db9b6727ab.pdfIn PDF document text
- https://cdn.sqhk.co/pulazapusaw/uhafhat/30089505896.pdfIn PDF document text
- https://mejodedasebedo.weebly.com/uploads/1/3/4/7/134725949/batexowabugiwefav.pdfIn PDF document text
- https://dikubone.weebly.com/uploads/1/3/4/6/134603537/loxekuwik.pdfIn PDF document text
- https://cdn.sqhk.co/wejawujagi/bPMVeMB/slots_lv_bonus_code_2020.pdfIn PDF document text
- https://cdn.sqhk.co/sesumaku/MgcyvvC/10583791498.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481528/normal_6023f1d15679b.pdfIn PDF document text
- https://lebotisoko.weebly.com/uploads/1/3/4/5/134597635/xiwuzirefaxiti.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4483837/normal_5fc5c95cb414d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457014/normal_605171427c198.pdfIn PDF document text
- http://nesorus.mywebcommunity.org/zimipasotar.pdfIn PDF document text
- http://pazadixokumox.sportsontheweb.net/bisivaretiwigaxelapa.pdfIn PDF document text
- http://shimano-stradic.ru/cercle_de_la_forme_dauphine_adresse7p7tc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481055/normal_5fd896295a5d7.pdfIn PDF document text
- https://cdn.sqhk.co/putevupumaf/wjif8gj/86015089124.pdfIn PDF document text
- http://vorgazme.com/cuisinart_ss-10_charcoal_water_filterpg54k.pdfIn PDF document text
- http://savadaqwe.space/what_is_the_sun_rising_time_todaywghjs.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://5a20c861-23fd-468b-888e-078c5342874f.filesusr.com/ugd/924841_1fde37a479b04c45842d8073a46b6305.pdf?index=trueIn PDF document text
- https://9a60fab3-6fb0-4be7-9305-b2e3cc44d963.filesusr.com/ugd/811c4f_81a463708aa14d3a99f6d7319ac36967.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_off0000e8a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8A9	4672 bytes
SHA-256: `8b372bb25cdc6ecb306b4acfefdbd191bb65fab09f56c1d609cb07c484c74b7f`
`font_01_sfnt_off0000f887.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF887	10924 bytes
SHA-256: `efc7cc93e5426075d4d1510776ae2b13951a59a00f03e82a64dd7fcf80ececad`
`font_02_sfnt_off00011bec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11BEC	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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