PDF malware analysis — malicious · d0c8509eaf1489d6

MALICIOUS

PDF

76.9 KB Created: 2021-01-17 17:06:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 5460626bf6482a687a796012a5c25100 SHA-1: eb2d9d40c92732c8a62fcbe4dc1e4dc25d946f4a SHA-256: d0c8509eaf1489d67fcc7bb1e826a42e279ccec25df905b8b18bdb59756482c1

214 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a significant number of external links, many pointing to redirector infrastructure, indicating a link farm used for malicious purposes. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites, potentially leading to exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
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://traffmen.ru/123?utm_term=actor+1800+tequila+commercials In PDF document text
- https://site-1244201.mozfiles.com/files/1244201/luruxuxedoli.pdfIn PDF document text
- https://tegidaweriwasul.weebly.com/uploads/1/3/1/4/131483440/xogitusamisavi.pdfIn PDF document text
- https://site-1171806.mozfiles.com/files/1171806/blue_cross_blue_shield_of_texas_address.pdfIn PDF document text
- https://site-1176433.mozfiles.com/files/1176433/drunkn_bar_fight_psvr_trophies.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4374175/normal_5fe5f124a84b6.pdfIn PDF document text
- https://jotigigej.weebly.com/uploads/1/3/0/7/130739509/xafivuvus.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418167/normal_5fe675dea1dce.pdfIn PDF document text
- https://site-1175657.mozfiles.com/files/1175657/71612908660.pdfIn PDF document text
- https://guxemufisi.weebly.com/uploads/1/3/2/7/132710659/31b93329.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453098/normal_5fdb5449765ca.pdfIn PDF document text
- https://site-1178921.mozfiles.com/files/1178921/how_to_have_a_virtual_family_game_night.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4426813/normal_5fff97ad65751.pdfIn PDF document text
- https://site-1173987.mozfiles.com/files/1173987/how_to_writing_incident_report.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419192/normal_5fd62a4f656fa.pdfIn PDF document text
- https://site-1172732.mozfiles.com/files/1172732/edit_parler_posts.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://s3.amazonaws.com/zirojopemup/32039237971.pdfIn PDF document text
- https://s3.amazonaws.com/tuletivotarupu/adoption_par_form.pdfIn PDF document text
- https://s3.amazonaws.com/xaliwalufoguni/ludude.pdfIn PDF document text
- https://s3.amazonaws.com/zarusegibitumet/16903897414.pdfIn PDF document text
- https://s3.amazonaws.com/wazotojemov/jexapipezipafoter.pdfIn PDF document text
- https://s3.amazonaws.com/xakapudakadu/4136544415.pdfIn PDF document text
- https://s3.amazonaws.com/gavexilatuvitaz/23805634012.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_off0000e0e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0E8	5224 bytes
SHA-256: `18578d7a65fd4787cf17743cd6dc9916096614d795a00b6cb619e6cae36555f3`
`font_01_sfnt_off0000f2b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2B2	10944 bytes
SHA-256: `a5c56366c3219ec5eefe69566623c61c879575d0be74bb363700e32681d132cd`
`font_02_sfnt_off00011808.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11808	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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