PDF malware analysis — malicious · ba45d36de72ec471

MALICIOUS

PDF

81.5 KB Created: 2021-09-19 03:23:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: bd36c4458018d4097ffb8b2cda6fe772 SHA-1: 27a9783e7963b69fe109b656d67798139ffe64e6 SHA-256: ba45d36de72ec471f3d137a996485a54cb3b3bab33a893f5538e64edc77062c9

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous external URLs were extracted, many pointing to compromised CMS upload directories or acting as link farms, suggesting a phishing or malware distribution scheme. The PDF structure and embedded content are consistent with attempts to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9955

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
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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://oniceh.ru/uplcv?utm_term=content+providers+in+android PDF link annotation
- http://tsrmvolontari.it/userfiles/files/kivojepotalofotutafora.pdfIn PDF document text
- http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/vle7tv54f05b5ne41dgbr2j0v1/20853710687.pdfIn PDF document text
- http://www.puhito.hu/uploads/kilimujomenazuranajuru.pdfIn PDF document text
- https://infoenergie-loire.org/userfiles/file/69230068107.pdfIn PDF document text
- http://cerezolorente.com/files/cerezolorente/_repo/file/72324471673.pdfIn PDF document text
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2c59ca5ef---2407487419.pdfIn PDF document text
- https://digireg.sk/upload/kefabilizenesulitipufid.pdfIn PDF document text
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161302ec048164---disajizapuguxesawububi.pdfIn PDF document text
- http://mobilesamara.com/img/files/file/bimasejuwojalu.pdfIn PDF document text
- http://www.syrahresources.com.au/application/third_party/ckfinder/userfiles/files/93883874622.pdfIn PDF document text
- http://trustarshida.co/cache/fck_files/file/88198878182.pdfIn PDF document text
- https://grouptm2.com/contents/files/17991180979.pdfIn PDF document text
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/hddu1idode85i73she17se7op6/nezuna.pdfIn PDF document text
- http://dayou.tw/uploadpic/files/202109101047487835.pdfIn PDF document text
- http://www.ghidmariaj.ro/app/webroot/files/ckfinder/userfiles/files/tajago.pdfIn PDF document text
- https://adikkedua.com/contents/files/gidaxasataguralun.pdfIn PDF document text
- https://www.auto-ecole-rive-droite.fr/ckfinder/userfiles/files/kifuvimoluzoxijugelemumu.pdfIn PDF document text
- https://www.sherpachristain.org.np/ckfinder/userfiles/files/82376758002.pdfIn PDF document text
- http://stroytehcentr.ru/images/file/luduro.pdfIn PDF document text
- http://gandolfiarchitetti.com/userfiles/files/pukiburinebeketimid.pdfIn PDF document text
- http://abwrva.com/uploads/files/91946430041.pdfIn PDF document text
- http://www.feniuniversity.edu.bd/app/webroot/ckfinder/userfiles/files/82274306327.pdfIn PDF document text
- https://0286869143.com/editor_images/files/minizad.pdfIn PDF document text
- http://webinaris.eu/ckfinder/userfiles/publics/files/zulub.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_off0000db60.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB60	17512 bytes
SHA-256: `66643dbc655d158b1e75b9f68ad6d7c77cc30ba9390f2d96995ce7b5670c2200`
`font_01_sfnt_off00010911.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10911	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012128.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12128	10436 bytes
SHA-256: `67cb09e3800c05e92a4c94ed4813fe921568edd4bf48416162638b8192b1077d`

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