PDF malware analysis — malicious · b45799ce97e46298

MALICIOUS

PDF

82.0 KB Created: 2021-08-31 02:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: 3d25e7db1eab4ede728249417702ed78 SHA-1: 177228f20bbc8404b55011ee7b7208031bbc81f8 SHA-256: b45799ce97e462989ff6fa372f34ace96c9552c4d8d719a49284888cc941052f

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery via these links. No scripts were extracted, but the PDF structure and URL heuristics point to a common pattern of using documents to drive traffic to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9987

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://archism.ru/uplcv?utm_term=90mm+to+inches PDF link annotation
- http://zezoalza.com/ckupload/files/zijelaburib.pdfIn PDF document text
- https://area34.info/wp-content/plugins/super-forms/uploads/php/files/8suq6rpfben02epa0qid8tekp0/vijorevenupife.pdfIn PDF document text
- https://htlexpress.com/ckfinder/userfiles/files/26074805555.pdfIn PDF document text
- http://xn--365-pn7mwb654m2qn.com/ckupload/files/47431228953.pdfIn PDF document text
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612d48e2049aa---75347069833.pdfIn PDF document text
- http://hotelrefah4ter.ir/basefile/hotelrefah4terir/files/kiwexiduxovoridife.pdfIn PDF document text
- https://almoheetmanpower.com/public_html/userfiles/file/bavomapegasisajabepok.pdfIn PDF document text
- https://airflow-skateboards.com/upload/file/suduposodiwikumalowom.pdfIn PDF document text
- https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/b2e2745015acc4587b02c7bb89e6429e/72972614571.pdfIn PDF document text
- http://totoumi.jp/upload/file/vifuroxogoxix.pdfIn PDF document text
- http://pulsarvn.com/media/ftp/file/83882706297.pdfIn PDF document text
- http://reginahajo.hu/_user/file/99299242248.pdfIn PDF document text
- http://ristoranteibucanieri.it/userfiles/files/73038387420.pdfIn PDF document text
- https://panificiopasticceriabattaglia.it/file/depami.pdfIn PDF document text
- http://www.allatpatikapecs.hu/images/file/66662370301.pdfIn PDF document text
- https://www.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac104c5217---58466015433.pdfIn PDF document text
- http://michellesmithscott.com/clients/36670/File/sijaworonasanebobabis.pdfIn PDF document text
- https://sherwoodchamber.org/ckfinder/userfiles/files/wesagokuvovisivoraw.pdfIn PDF document text
- http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d31e3a581---82314650664.pdfIn PDF document text
- http://kiavysocina.cz/UserFiles/File/35751875012.pdfIn PDF document text
- http://elm3rad.comfile/84437584393.pdfIn PDF document text
- http://mousike.it/img_ins/files/fizato.pdfIn PDF document text
- https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16087e2904743c---32595151940.pdfIn PDF document text
- https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/d83e0c12ff68fde7c90fb75182b0402a/zelusemidenefe.pdfIn PDF document text
- https://zivotzaokny.eu/res/file/66685828475.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_off0000e0b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0B6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f8cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8CD	10380 bytes
SHA-256: `3f9008242f35905afaa57eaed4214c292ce508dbeeed04696e73d4897625cb7d`
`font_02_sfnt_off00011014.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11014	16244 bytes
SHA-256: `9d8818d32098456f747d558d15d3e672ce43f1970601430c7b6dfb68e4d7300c`

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