PDF malware analysis — malicious · bdbb480c3bd9c08f

MALICIOUS

PDF

71.4 KB Created: 2021-09-25 03:34:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 1b46813ce96821abcf6c6f0ee7ae86bd SHA-1: 61d3f38b75168701845655bd9f48263b02a4f5b7 SHA-256: bdbb480c3bd9c08fb7e99f5c49fa58edaf84f3c556df40c3d00712344f37a936

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to potentially malicious or unknown domains, suggesting a link farm or phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags the document for containing many links on disposable hosting, reinforcing the phishing or malware distribution vector.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 5

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 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 http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/166d5b05ebbcd3d196f71d9d99bab31b/48159020487.pdf In PDF document text
- http://qiuyutv.com/userfiles/files/20210908030055.pdfIn PDF document text
- http://sineadstone.com/userfiles/file/16516178686.pdfIn PDF document text
- https://mosaicopeoplecorporation.com/ckfinder/userfiles/files/fafopobutosoligafidovobo.pdfIn PDF document text
- http://www.swaving-stalinrichting.nl/ckfinder/userfiles/files/37303811228.pdfIn PDF document text
- https://ecpa.fr/uploaded/file/tepimup.pdfIn PDF document text
- http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/88963236566.pdfIn PDF document text
- http://dtpokebar.com/uploads/files/42773649475.pdfIn PDF document text
- http://tienhasteel.com/app/webroot/upload/files/doxixi.pdfIn PDF document text
- https://spacio.hk/attachment/file/65656713591.pdfIn PDF document text
- https://supportsystemsvainc.com/home/ssvi/public_html/ckfinder/userfiles/files/71488657394.pdfIn PDF document text
- http://haciogullari.com/depo/sayfaresim/file/katazepibesuvolegov.pdfIn PDF document text
- http://haithuanphat.com/uploads/files/xafenosewexifo.pdfIn PDF document text
- https://heks-tech.com/app/webroot/userfiles/files/wujarid.pdfIn PDF document text
- https://cgeminfos.ma/upload/file/24393697513.pdfIn PDF document text
- http://schodylux.pl/userfiles/file/pavozoridulixiruviwifadus.pdfIn PDF document text
- http://conblocmanado.com/pics/file/85550579964.pdfIn PDF document text
- http://salt17.com/userfiles/files/dopafexitesedi.pdfIn PDF document text
- http://radioevangilereal.com/assets/ckfinder/core/connector/php/uploads/files/kagomopig.pdfIn PDF document text
- https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d074a91f15---91645836929.pdfIn PDF document text
- http://shijijiaming.net/filespath/files/20210908171900.pdfIn PDF document text
- https://ht-cooling-j3t.com/contents/files/lezotiwexegefegurugulegod.pdfIn PDF document text
- https://firsatpin.com/calisma2/files/uploads/52337003164.pdfIn PDF document text
- http://balbu.hu/uploads/news/file/33057247357.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=animlovers+download+for+pcPDF 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_off0000b368.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB368	17076 bytes
SHA-256: `3be91abaf6ecc33e9eac923082a2cd02ccc66f66454cddb96c0174914494c88f`
`font_01_sfnt_off0000dece.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDECE	10816 bytes
SHA-256: `9c192bbd007d4293aca74a3afbd9fefab73309ec8c93546ff47f191603cc16e2`
`font_02_sfnt_off0000f7cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7CD	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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