PDF malware analysis — malicious · 9ef2c6ef0b03d028

MALICIOUS

PDF

79.8 KB Created: 2021-02-08 17:57:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05

MD5: d9975519d741187800500d1076efb39d SHA-1: af77e8554f23210b92af261d9a0887b31caf59f8 SHA-256: 9ef2c6ef0b03d028f0869607824775b4910a849e9c00d50ef5b805e90d182b6e

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, many hosted on disposable domains, forming a link farm. The document body mentions 'Yowhatsapp apkpure 7.99 download', suggesting a lure to a potentially malicious download site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://leonvi.ru/123?utm_term=yowhatsapp+apkpure+7.99+download PDF link annotation
- http://vinorama.fun/fever_pitch_book_summaryb2ksn.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4393035/normal_5ffdb9b61e44d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4455681/normal_5fcf7e657405a.pdfIn PDF document text
- https://tonavibete.weebly.com/uploads/1/3/4/7/134748981/fae06fd654bc.pdfIn PDF document text
- https://muxasikij.weebly.com/uploads/1/3/1/8/131872285/e3d3ab.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4497344/normal_601e919020d2a.pdfIn PDF document text
- https://pafililesenuxag.weebly.com/uploads/1/3/5/9/135964876/bca02100edff63.pdfIn PDF document text
- https://senajadodum.weebly.com/uploads/1/3/1/3/131379015/guvuko.pdfIn PDF document text
- https://ninisezidopif.weebly.com/uploads/1/3/5/3/135391617/perifitimiwuli_lexozitag_wirefenebe.pdfIn PDF document text
- http://boviriso.22web.org/cockcroft_report_paragraph_243.pdfIn PDF document text
- https://nimidakotogala.weebly.com/uploads/1/3/0/8/130874585/fovoxapelobop-misomodadel.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4456119/normal_5ff408178414f.pdfIn PDF document text
- https://gozobamo.weebly.com/uploads/1/3/4/7/134714837/12302a57557a7.pdfIn PDF document text
- https://dijamolilum.weebly.com/uploads/1/3/5/3/135347404/f2449.pdfIn PDF document text
- https://rekixalegupu.weebly.com/uploads/1/3/2/7/132740488/viboduraxajabezi.pdfIn PDF document text
- https://metidelesaweso.weebly.com/uploads/1/3/0/8/130813592/5467831.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
- 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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d78f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD78F	5268 bytes
SHA-256: `ac081f84047de8d47215023a69c78614cfffe547687d59f79a9b7f4796bdc4f0`
`font_01_sfnt_off0000e98d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE98D	10540 bytes
SHA-256: `472a8f7e39325c3674714a0534da9b299505bbbade3825319a1293babff05b60`
`font_02_sfnt_off00010de3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10DE3	16312 bytes
SHA-256: `bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939`
`font_03_sfnt_off0001236e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1236E	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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