Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ceb2d77457ca5b5…

MALICIOUS

PDF

82.4 KB Created: 2021-09-06 00:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 84c1b8cd45b3beac377cdf26bb82e06b SHA-1: cd810fe459a23ae2d96f36f69e97e882b026498f SHA-256: 5ceb2d77457ca5b579d108935516fb40ea68184deaa72ccc96c0c8cf66935511
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. It functions as a link farm, containing numerous URLs pointing to various websites, some of which are hosted on compromised CMS platforms. The primary purpose appears to be directing users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://allytemp.ru/uplcv?utm_term=kerala+map+with+tourist+places+pdf PDF link annotation
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8af3e9317b---sutevisirax.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/70080697814.pdfIn PDF document text
    • http://www.elmundodelapiscina.com/ckfinder/userfiles/files/nogodexevajilu.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/kepegajesikakajapedi.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/866d1f12b8efa90506a0abe91913eb4b/31432603385.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add685264a8---bolazigisedadawa.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/1bd2b4df2666d62db5d255090aec9c6a/5501054122.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/2a7e38dfbdcc5c2bc39bf654c8389818/lebam.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/00ea12d53949b35bf4c6b773fdbe9913/ruxanepozugomek.pdfIn PDF document text
    • https://folklorebridge.eu/uploads/pictures/files/monumexutezedifugidogul.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/088d5b7540ad364948dc1ee3b9787592/ritufe.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/mejamufifakunanutub.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c79e737ab41---73431235375.pdfIn PDF document text
    • https://aiwatopup.com/ckfinder/userfiles/files/54992557055.pdfIn PDF document text
    • http://odnoklassniki-files.ru/images/uploads/files/bosilos.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b56b85b3996---93066467285.pdfIn PDF document text
    • https://razredna-nastava.net/files/zavuve.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea5d6740d1---fameraluboru.pdfIn PDF document text
    • http://icmasistemas.com/userfiles/files/pebokeguler.pdfIn PDF document text
    • http://hoitruyengiaocodocvietnam.com/uploads/image/files/rimerominitinulof.pdfIn PDF document text
    • http://grupposcorcia.it/userfiles/files/92461144221.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088d542b7e84---85582813996.pdfIn PDF document text
    • http://abwva.com/uploads/files/bometa.pdfIn PDF document text
    • http://tlumacz-bialystok.pl/pliki/file/kovumepadurapo.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/39075230637.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_off0000deb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB0 10956 bytes
SHA-256: bcfbeb34d36b31279f51fed3b5c380a8ec5e9dc7eb02e81e62ec1ed877be848b
font_01_sfnt_off0000f828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF828 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001103a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103A 16812 bytes
SHA-256: 61d23718329e4897bef93718fa8de568992da806904635ac759f6eca40896c29

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