PDF malware analysis — malicious · d84004a9b660af97

MALICIOUS

PDF

79.4 KB Created: 2021-09-21 04:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: e4dafaf6b92a1cccf0fe848e67b1b094 SHA-1: 297853eefdaf6e0e20f1b2e5337aec0d7eefa2f5 SHA-256: d84004a9b660af97899c5052ccadbab010b93f8e3fc3e721b9c909d2c7c5eed4

146 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Numerous external URIs are embedded, suggesting a phishing or malware distribution attempt. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_URI heuristics strongly supports this attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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 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.
QR-code redirect lure medium SE_QR_LURE

Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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://allytemp.ru/uplcv?utm_term=shareit+connect+to+pc PDF link annotation
- http://dienlanhhuubinh.com/upload/files/zidobozibil.pdfIn PDF document text
- http://www.gabrielamaciel.net/images/content/file/sebip.pdfIn PDF document text
- http://austria-ex.com/images/blog/file/90692173864.pdfIn PDF document text
- https://villanakarin.com/userfiles/files/56024343969.pdfIn PDF document text
- http://omgmediatank.com/userfiles/files/xipegibomogapurebire.pdfIn PDF document text
- http://partnercable.hu/files/jokanozin.pdfIn PDF document text
- http://vaynhe.com/upload/files/kafesenas.pdfIn PDF document text
- http://ordineveterinarivenezia.eu/userfiles/files/99376161622.pdfIn PDF document text
- http://urdu-hadith.com/survey/userfiles/files/26959017454.pdfIn PDF document text
- https://afmiletisim.afmiletisimajansi.info/resimler/files/397173251.pdfIn PDF document text
- https://ilonew.tasksplan.com/userfiles/files/kalakobokijur.pdfIn PDF document text
- https://vinadesigndanang.vn/uploads/image/files/85439495578.pdfIn PDF document text
- https://torgradio.ru/new/files/file/18871165985.pdfIn PDF document text
- https://banerjeetourspecial.in/ckfinder/userfiles/files/fesirenavirozudowofonas.pdfIn PDF document text
- http://snabsz.ru/ckfinder/userfiles/files/58693303100.pdfIn PDF document text
- http://sydjpg.com/images/upload/file/20210921_060842_150.pdfIn PDF document text
- http://studioindelicato.com/userfiles/files/tesip.pdfIn PDF document text
- http://linker-apps.com/files/96182575340.pdfIn PDF document text
- https://thefertilizerequipment.com/d/files/885027376.pdfIn PDF document text
- https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/d4d61d29dc5fdca987317e914dd44184/dotawurimurun.pdfIn PDF document text
- http://www.ecvbrass.ch/user/web/file/kobupidegekulozajukimepib.pdfIn PDF document text
- http://xn--h1agcmh.com/ckfinder/userfiles/files/xusaropa.pdfIn PDF document text
- http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/36556825198.pdfIn PDF document text
- https://mimpidia2.com/contents/files/ruvimelowibeta.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d3f4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD3F4	17792 bytes
SHA-256: `af3d098654d72ebe1f92b10daf750db2ef8420e910f7dbb611019d1efe26ca77`
`font_01_sfnt_off0001011b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1011B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011932.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11932	10332 bytes
SHA-256: `af8181b94a55f819538d8599e6100c0279c045744a48b1a8888aae4c816df328`

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