Malicious PDF — malware analysis report

Static analysis result for SHA-256 745e2e8c04180a7f…

MALICIOUS

PDF

83.4 KB Created: 2021-08-18 07:36:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e690abf0a496f19a54166072704e973b SHA-1: b4a438b4bb11a9c8f07b4a5764dc7669241b8d4e SHA-256: 745e2e8c04180a7feed180d3dfb69a719fc9ddbc60693c51eeff4340d19f77b6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ML classifiers 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 document body is heavily obfuscated and unreadable, but the presence of external URIs and the overall heuristic firings indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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://queure.ru/uplcv?utm_term=diario+de+un+seductor+soren+frases PDF link annotation
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/2n956l69iekjiv20i1ucfk55ji/61248027575.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/4136073129bb2138974f518399109047/sezuguzilipidi.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/zemoxavigo.pdfIn PDF document text
    • http://belean.pl/userfiles/file/28327921056.pdfIn PDF document text
    • http://thuocamakong.net/userfiles/image/file/18083777383.pdfIn PDF document text
    • http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/76318794459.pdfIn PDF document text
    • http://taiwanglassgroup.cn/userfiles/file/detirelutimakez.pdfIn PDF document text
    • https://datajournonepal.org/files/78458519802.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/24995863861.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/85k81lf2u0nfh2hm695hvse69j/mipelefifulepoki.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/porusakapefipugumuwitase.pdfIn PDF document text
    • https://fajanav.com/aym_image/files/bexuneg.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/d7db60421be16ab883b60165184f9fd3/20875171729.pdfIn PDF document text
    • http://greenlivinggarden.com/htdocs/UserFiles/file/dunefibatez.pdfIn PDF document text
    • https://jasz-pap.hu/UserFiles/file/80142821673.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/2b96ba8p2h4t6cnvdpi7gk0d81/74863247121.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/tarutejinukotivi.pdfIn PDF document text
    • http://halaljones.com/uploads/files/30899818019.pdfIn PDF document text
    • http://classicalgardenfountains.com/uplds/file/50541933734.pdfIn PDF document text
    • http://pomocnaukowa.net/Upload/file/vazekowi.pdfIn PDF document text
    • https://juniorclublivorno.com/sitonews/images_upload/files/63543518657.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b03c92bbe36---jatesusenifi.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7256586c0---72270452824.pdfIn PDF document text
    • https://zakarpattya-tour.com/upload/52911747875.pdfIn PDF document text
    • http://irvinenott.co.uk/ckfinder/userfiles/files/maxipona.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20210716_C12F1DFFD709DFD1.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_off0000dfb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C7 17960 bytes
SHA-256: 23cc5218bf1aefd01f203f0c6283d306155808255b20a3f168944adb0947419a
font_02_sfnt_off000125a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125A3 10524 bytes
SHA-256: ef028e1b640cec9fb03d515c3b7b226bd2e58c1b16c81bad84ce9d6397956e6c

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