Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c3d427a672c3cd…

MALICIOUS

PDF

85.9 KB Created: 2021-07-04 16:08:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: e776cc1b1d1ea56bd904481defbe6ee6 SHA-1: 265f30c98787794cbfcc53840b74b2d22322e8ab SHA-256: 63c3d427a672c3cdbac0a0399f01fa4dfe442540e19009af771bc43de7643fd8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware distribution lure. The document functions as a link farm, containing numerous external URIs pointing to various websites, many of which appear to be compromised or disposable hosting. The primary purpose seems to be redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://catamma.ru/uplcv?utm_term=the+odyssey+cyclops+quotes PDF link annotation
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/tn4phdv25ad5aeivit41lgi02c/debupubinoxid.pdfIn PDF document text
    • http://gernano.eu/gfx/userfiles/files/pidadalo.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/7d7654e9da2d139feb32daf81d00fa3d/titozagit.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acd59da8233---paxizif.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/74812662312.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160882a0af0038---newiv.pdfIn PDF document text
    • http://jhdjt.com/images/upload/File/piteremanikewunemonazejig.pdfIn PDF document text
    • http://wirheiraten.de/images/file/48117731999.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160857d8033935---38756937573.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/nc6kuv239mee87pjj29c7mg3dk/robatejijovow.pdfIn PDF document text
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/rujivipoguk.pdfIn PDF document text
    • http://valifyrepapillon.com/clients/6/68/68e1c6a84db99a04c21676ff826d6e37/File/pebixogogikumowob.pdfIn PDF document text
    • http://ziconiavip.com/uploadfck/file/posilowuteziga.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b11530f1c4---fapanojadazeg.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-5-10/20210510062723435320.pdfIn PDF document text
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/6e0b957a2845e3b655fd7e1e4a7cfb8e/wagodoxu.pdfIn PDF document text
    • http://ruilong-ironwork.com/CKEdit/upload/files/75634471348.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/be8sm47fman7vlb7kv48rbgi65/koborikanezofetarawalet.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/82468d78e4ff96f19de91bf51129f7a2/lukolozeda.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/ncli97muiodvsghkt662esfmi6/38820719348.pdfIn PDF document text
    • http://thegroverestaurantnj.com/userfiles/files/pidomomakanav.pdfIn PDF document text
    • http://serramentisiciliano.it/userfiles/files/78077579167.pdfIn PDF document text
    • http://taniaandjohn.com/clients/874109/File/69569648899.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a68eb0ab8bd---83471829126.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/13058f63bab5a3da57f5ce77a65c49d3/13581008675.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.

FilenameKindSourceSize
font_00_sfnt_off0000f1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000109dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DD 16372 bytes
SHA-256: 9cc1912430e11649d856a9b06589887651fe5d8553b69904378b19c0156432b5
font_02_sfnt_off000133ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133CE 10476 bytes
SHA-256: e304062078056df5c0a361d7eb3005ea1c0aea7463f6c3b7f984adaf442b282b

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