Malicious PDF — malware analysis report

Static analysis result for SHA-256 c214107962fbd1ba…

MALICIOUS

PDF

71.1 KB Created: 2021-10-01 08:34:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 7ad7fa7b10c7cf9c522ea2d12a9c25e6 SHA-1: c4ce86738342913f676fa9accc9aeb6365e7774f SHA-256: c214107962fbd1ba13ec984a0ee0b1a4951fdbf3f9a37b17835f30979864a4f6
156 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://smidgel.ru/uplcv?utm_term=latest+android+version+for+galaxy+s7 PDF link annotation
    • http://www.europesolidaire.eu/userfiles/files/fenonozomose.pdfIn PDF document text
    • https://termofriz.rs/files/86255342233.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/c360558cf199ee795db81ff3b4d59e4c/24000432873.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1612f985f7e863---87711259686.pdfIn PDF document text
    • https://bizimpin.com/calisma2/files/uploads/ramuxopudevadulezozum.pdfIn PDF document text
    • https://kirmatas.com/userfiles/file/wovigezazasima.pdfIn PDF document text
    • https://hinodecoder.com/userfiles/file/lariwitifaviboloror.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dcea1d92d7---78382178774.pdfIn PDF document text
    • http://www.neoneofitou.com/ckfinder/userfiles/files/bulevubajafojo.pdfIn PDF document text
    • https://indoshaolinkungfusociety.com/ckfinder/userfiles/files/57602644703.pdfIn PDF document text
    • http://www.musicboxpiano.com/contentfiles/96046563905.pdfIn PDF document text
    • http://enslev-anlaegsservice.dk/userfiles/file/miruzekibivaxopedonegewov.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/30774623971.pdfIn PDF document text
    • http://cableesmaltado.com/d/files/83547945520.pdfIn PDF document text
    • http://epoxidice.ro/mm/file/dowijipamuwijasex.pdfIn PDF document text
    • http://cannamelis.com/userfiles/file/lovozafivavibutiloso.pdfIn PDF document text
    • https://proektasis.gr/admin/spaw2/uploads/files/guboperevinikut.pdfIn PDF document text
    • https://phm.vn/upload/files/revox.pdfIn PDF document text
    • http://vin-baietii.ro/ckfinder/userfiles/files/rajemesigatadutaja.pdfIn PDF document text
    • http://preciz.com/uploads/wysiwyg/files/jefadajusupuvasibirepep.pdfIn PDF document text
    • https://www.rougeindigo.com/ckfinder/userfiles/files/82024124815.pdfIn PDF document text
    • http://lagerunda.it/public/upload/file/48378921279.pdfIn PDF document text
    • http://libron.pl/fckupload/assets/file/veraluxetapesebi.pdfIn PDF document text
    • https://mtmnetwork.net/uploadEditor/files/92191682049.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_off0000b2ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2AC 16952 bytes
SHA-256: 45b7d9a2849c10a5856f0da9c3fbb40905437dc6fb68ea3c696fc10f1ec55061
font_01_sfnt_off0000dde3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE3 10816 bytes
SHA-256: 18401866b326fed0fd5dcc88ad95cb8b89a44b4d4470711adb41126aae97af38
font_02_sfnt_off0000f6df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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