PDF malware analysis — malicious · 85b060175e8fb0c6

MALICIOUS

PDF

71.9 KB Created: 2021-09-23 05:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 8cc51928629fdc632d45a03ff2f80877 SHA-1: 56c6d4a63c81822af3f4837172d53a4495978358 SHA-256: 85b060175e8fb0c6ca9ce49d2f518572cbac4c1f22e9687fe25993e4d5d0c81c

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains embedded JavaScript and numerous external URIs, many of which point to a link farm structure. The presence of embedded JavaScript suggests an attempt to execute malicious code, likely to redirect the user to further malicious sites or download additional payloads. The PDF's structure and numerous links indicate a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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 http://moneymaker-gold.de/files/94660870302.pdf In PDF document text
- http://dydlhx.com/upfiles/file///24186907429.pdfIn PDF document text
- http://hotelbelleepoque.bg/userfiles/file/4552045284.pdfIn PDF document text
- https://danfort.lv/userfiles/file/befizenoja.pdfIn PDF document text
- http://phunphu.com/userfiles/file/saxijeserabamusonun.pdfIn PDF document text
- https://kawanmto.info/contents/files/53813806104.pdfIn PDF document text
- http://logiccpacma.com/ckfinder/userfiles/files/47937641052.pdfIn PDF document text
- http://pizzeriadevita.it/userfiles/files/54578020146.pdfIn PDF document text
- http://pnmanagementsolutions.in/uploads/tezuvazikutofobexigim.pdfIn PDF document text
- http://telegid.tv/userfiles/file/2097345225.pdfIn PDF document text
- http://esistore.lu/userfiles/file/63064503964.pdfIn PDF document text
- https://alsultantrading.ae/userfiles/files/daxekokawakutevig.pdfIn PDF document text
- https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136685233614---80582150243.pdfIn PDF document text
- http://tavaszitura.eu/userfiles/files/26662195816.pdfIn PDF document text
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612f92e4bcb22---97269109127.pdfIn PDF document text
- https://xn--fct8ml6mwue.tw/uploads/files/51974320888.pdfIn PDF document text
- https://nakipoglugroup.com/upload/ckfinder/files/71756086132.pdfIn PDF document text
- http://tchid.net/userfiles/file/tepever.pdfIn PDF document text
- https://tndvn.com/js/ckfinder/userfiles/files/46346374102.pdfIn PDF document text
- https://softwebstar.com/shop/userfiles/file/58670461309.pdfIn PDF document text
- http://xy-interior.com/uploads/files/202109111633109225.pdfIn PDF document text
- http://agro-pasz.pl/ckfinder/userfiles/files/77893662592.pdfIn PDF document text
- http://cdseoulps.com/uploadfile/fckeditor/file/dekixuzabozepuzolo.pdfIn PDF document text
- http://fundacjahfg.pl/upload/file/taxokuwigazazukaxejiku.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=xciptv+apk+for+firestickPDF link annotation
- 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_off0000b702.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB702	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000cf19.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF19	10488 bytes
SHA-256: `2afe03f00ce897e4051c95bcad79cb2b0f2708b479847319ed3e3cc7fe8fbd17`
`font_02_sfnt_off0000e72a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE72A	16520 bytes
SHA-256: `ee881bdba331cb5b15e66d9fadc0629d67a22770a018b61d6981690733a0cacf`

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