Malicious PDF — malware analysis report

Static analysis result for SHA-256 454bf70d53d05b6f…

MALICIOUS

PDF

139.7 KB Created: 2021-08-01 07:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 63320033d4281ad701bc254631e19104 SHA-1: 646a906e61cc1ee4142ebd93caa9aa76f72ad2ab SHA-256: 454bf70d53d05b6f5236f3b023e5ed6c4e81163ee74d50299eeb7555b3432ff1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which point to compromised websites or disposable hosting, indicating a link farm designed for malicious redirection. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

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 http://homeopathyhongkong.cn/files/40744444422.pdf In PDF document text
    • http://www.onlinetemsilci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a16d16a2db---fifumig.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/9f2caf6e0214de86ff2b0ea2fef465c0/39673325725.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae38bbb7a6---givanujitevagosefifo.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/786be0ce58e987c626f3f36ae2cd3c69/tomatifuguledezeloto.pdfIn PDF document text
    • http://angeladaniel.eu/uploads/files/mumalik.pdfIn PDF document text
    • http://www.cddfct.com/up_files/file/10679734124.pdfIn PDF document text
    • http://edgecs.net/documents/83712030285.pdfIn PDF document text
    • https://winpoasia.com/ckfinder/userfiles/files/51373328299.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/48924360344.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c6f754de9c1---63369778995.pdfIn PDF document text
    • https://ferado.vn/userfiles/file/47492397091.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/15aa4764f8d50b02319f0b8d1ce180e3/winukaxapeda.pdfIn PDF document text
    • http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ed2647bdb---lazenepub.pdfIn PDF document text
    • https://juhaszautovill.hu/userfiles/file/disuminobewixo.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d2603e3e6---vafabebimadejuzewaxi.pdfIn PDF document text
    • https://kltccompany.com/ckfinder/userfiles/files/80850261244.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16085e5e589186---bikazoluviginabipokamo.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a626b803dbc---84217167490.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5ab3d79c9---16219895816.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/rfnmsm7ucheu0o2jndndjrcv97/jixukedumesesunubaxis.pdfIn PDF document text
    • https://pima-alarms.rs/slicice/file/jokemoruxem.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/377bf7d2f3bdb90de0574695a9ad5925/28818519019.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=sefiller+victor+hugo+%C3%B6zeti+konusu+karakterleri+yorumlar%C4%B1PDF link annotation
    • 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_off0001bc28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC28 11552 bytes
SHA-256: 841ccfc362a3d583b547247c91fa5b037ca236bd495fa8aec479e3a3cc22a46e
font_01_sfnt_off0001d705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D705 19508 bytes
SHA-256: 5bb4b0a19c5ab24009915fd7e68bb1595439c915fa558a664d7b79b4d95b7525
font_02_sfnt_off000205f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x205F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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