PDF malware analysis — malicious · 389f3f514f4bd6b0

MALICIOUS

PDF

88.8 KB Created: 2021-09-22 21:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 6d876db547a7eab5f57de6991c3c3f89 SHA-1: b63d04fc3daeaeb6aa0a77ab08203aa8caef4440 SHA-256: 389f3f514f4bd6b094bcfcba0f0ab51edb12687c5568c399e4ef63ce4ce4c17f

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was identified as malicious by ClamAV and an ML classifier, with critical and high severity firings. It contains embedded JavaScript, a common technique for executing malicious code within PDFs. The PDF also acts as a link farm, pointing to numerous external URLs, one of which is a known phishing lure. The embedded JavaScript likely facilitates the redirection to these malicious URLs, serving as a lure for phishing or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9973

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 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 https://garglob.ru/uplcv?utm_term=transmitir+pantalla+android+a+pc+usb PDF link annotation
- http://fueandhair.com/userfiles/files/gamurigobowomotoki.pdfIn PDF document text
- http://anpo.vn/upload/files/29303097678.pdfIn PDF document text
- http://talleresjpg.es/img/file/xikovagololojilepenewuju.pdfIn PDF document text
- http://locthanhwindow.com/img_duhoc/files/34857960.pdfIn PDF document text
- http://sasolution.kr/userfiles/file/mixosubat.pdfIn PDF document text
- http://dmhu.eu/uploads/uplib/file/suwimilozavex.pdfIn PDF document text
- http://tajesink.com/Uploadfiles/files/4394509818.pdfIn PDF document text
- https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/c0f7682cd3fcd0b1780136cfb3a93bb9/kubodubirusifagowujenifi.pdfIn PDF document text
- https://ichapps.peaceofworld.com/ichapps/ckeditor-ckfinder-integration/uploads/files/66214404618.pdfIn PDF document text
- https://corpusbg.com/files/fck/file/ramomegawo.pdfIn PDF document text
- http://8njl.com/userfiles/files/wogodapasibumidizumixa.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/f14245d1d0e783052cde2f1f11c0c9c5/17365858489.pdfIn PDF document text
- http://peknanevesta.sk/media/file/duzarebanab.pdfIn PDF document text
- http://ccsl.asia/files/40003437865.pdfIn PDF document text
- http://tw-jia.com/uploads/files/202109082012575329.pdfIn PDF document text
- http://flixgolf.com/ckeditor/ckfinder/userfiles/files/nokemuwil.pdfIn PDF document text
- http://tuzoltosagmihald.hu/userfiles/file/nogisemugixakugerope.pdfIn PDF document text
- http://interstroy96.ru/uploads/files/35448832112.pdfIn PDF document text
- https://istanbularicilikfestivali.com/upload/ckfinder/files/jirafafazirokejuvotugifen.pdfIn PDF document text
- http://sgyscom.com/upload_fck/file/2021-9-19/20210919165914151897.pdfIn PDF document text
- http://riviera.az/userfiles/file/roronedewug.pdfIn PDF document text
- http://fixafilm.se/userfiles/file/68321005766.pdfIn PDF document text
- http://perechen-jurnalov.ru/js/ckfinder/userfiles/files/16659520812.pdfIn PDF document text
- http://honghuibio.com/d/files/65546858694.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_off0000f2ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2ED	10744 bytes
SHA-256: `3a8c1fdbcb3edf47fbd0f179c21de065aae29825269df88688e76c076693114f`
`font_01_sfnt_off00010b50.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B50	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012362.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12362	19228 bytes
SHA-256: `d0fc7403207036bd65cdfd9d5ebd688fa3579dfd541235c3fe8cd541ec63cc08`

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