Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64bd54246a90f76…

MALICIOUS

PDF

68.2 KB Created: 2021-09-19 07:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 870efa7a82a4afb2297d6efd19634bc8 SHA-1: 49971607821b0b293602c535c12933f73748fbb9 SHA-256: f64bd54246a90f761b71e0d6553fd943975d8d87462e202530cbd441085f31aa
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing or malware distribution, containing numerous links to external sites. One heuristic specifically flags links pointing to compromised WordPress upload storage, suggesting a potential distribution vector. Although no scripts were extracted, the presence of many embedded URLs and the overall structure strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 6

  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://pixomot.ru/uplcv?utm_term=download+tekken+6+iso+file+for+ppsspp PDF link annotation
    • https://rowanmkt.com/Uploads/ckfinder/userfiles/files/dafigepipurovu.pdfIn PDF document text
    • http://abwvictory.com/uploads/files/gitekogukarojunegelimas.pdfIn PDF document text
    • https://ferest.ro/imagini_ws/57614199765.pdfIn PDF document text
    • http://abwmarlboropike.com/uploads/files/60845666869.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/161408d12457ee---54079815842.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/161367c4540932---podiwemeluxosafaxakukape.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/42503540204.pdfIn PDF document text
    • https://nycsmindia.org/ckfinder/userfiles/files/kogag.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20210917235828.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/161403cd7f181f---zegavid.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16142080e9cbbf---68276534612.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/161415ca1f1e65---24724778363.pdfIn PDF document text
    • http://wtmongolia.com/materials/file/53871536392.pdfIn PDF document text
    • http://pi-consulting.ch/download/rivoputobiguj.pdfIn PDF document text
    • http://salespate.com/userfiles/file/sasabetozegufis.pdfIn PDF document text
    • http://jumpstart.mobi/ckfinder/userfiles/files/vedazabikunoritivej.pdfIn PDF document text
    • http://attilacenter.org/userfiles/file/86361873635.pdfIn PDF document text
    • http://greathorserider.com/ckfinder/userfiles/files/safodumu.pdfIn PDF document text
    • http://lmnn.ru/userfiles/file/sarawitubiloroxekasi.pdfIn PDF document text
    • http://espressobuilders.com/app/webroot/files/userfiles/files/fodelobifojuxabumufikof.pdfIn PDF document text
    • http://eia-edu.com/userfiles/file/viwobuvavinetojubifal.pdfIn PDF document text
    • http://opt-russtd.ru/data_center/upload_pictures/file/39176080926.pdfIn PDF document text
    • http://netichikawaya.com/userfiles/file/negutorat.pdfIn PDF document text
    • https://narellesastro.com/userfiles/files/kovegiketexaged.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_off0000af2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF2C 13936 bytes
SHA-256: 6ecb39d71f174239d8c79d742b0f4332b79e93b86508e955ae24fa4af295321c
font_01_sfnt_off0000d1d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EE 10840 bytes
SHA-256: c4eef4106795d4ed4db9b618d7cda2a3e16d846792e2e90febc76a1c3da51421

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