Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad8589bc698974c…

MALICIOUS

PDF

71.2 KB Created: 2021-09-26 23:28:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d8024edffa62a90f6070ef9c763fa644 SHA-1: 5eb3eeadf7614046a1ad036932c6fb4f17381a56 SHA-256: aad8589bc698974ca08eb39c54b2cebac57905f0061422c5649053d7aa1005fb
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs pointing to various domains, suggesting a phishing or malware distribution campaign. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by identifying the PDF as a link farm on disposable hosting, likely to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://infrive.ru/uplcv?utm_term=redmi+note+10+6gb+price+in+pakistan PDF link annotation
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161479b98d8672---69719853744.pdfIn PDF document text
    • https://binarbaid.com/public_html/userfiles/file/10736147506.pdfIn PDF document text
    • http://ohana1bbq.com/uploads/files/67364912844.pdfIn PDF document text
    • https://profitaler.com/UserFiles/file/22824960830.pdfIn PDF document text
    • https://resttour.com/images/userfiles/files/pafeviw.pdfIn PDF document text
    • http://retailcop.ca/files/vubabuzowimu.pdfIn PDF document text
    • http://aromacosmetics.bg/assets/userfiles/file/zowedotijuxilanux.pdfIn PDF document text
    • https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/54497453642.pdfIn PDF document text
    • https://maintogelonline2.org/contents/files/21874670306.pdfIn PDF document text
    • http://eskuvotoszkanaban.hu/editor_up/58868685242.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614c3f47595b7---69208409156.pdfIn PDF document text
    • https://dermatologie-francophone.com/userfiles/file/50905991273.pdfIn PDF document text
    • http://awards.nl/img/cms/file/zotaduzuxometijuti.pdfIn PDF document text
    • https://tdemo.order-pro.com/ckfinder/userfiles/files/palutararafimikutiworewo.pdfIn PDF document text
    • https://raiporjai.com/piceditor/file/4204004895.pdfIn PDF document text
    • https://gilboamedia.com/userfiles/file/soxokug.pdfIn PDF document text
    • http://bioident.pl/photos_fck/file/dafusakugomuf.pdfIn PDF document text
    • http://futurepoolandspa.com/ckfinder/userfiles/files/13609233665.pdfIn PDF document text
    • http://sity-luxe.ru/userfiles/file/fupegafamosixokulubof.pdfIn PDF document text
    • https://konteshamamotu.com/userfiles/file/95319076272.pdfIn PDF document text
    • http://poslovniimenik.net/firme_data/files/kazizupu.pdfIn PDF document text
    • http://4bx.pl/public/file/miroxanuwupuvix.pdfIn PDF document text
    • https://pollackmihalyiskola.hu/ckfinder/userfiles/files/pojitibigagujajal.pdfIn PDF document text
    • http://quartierdete.fr/uploads/fckeditor/file/fuvawu.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_off0000b36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB36B 16000 bytes
SHA-256: 7bbb088746bb776a2437020d89c7279d16688c9e5f88f7d0966504c4af951bf5
font_01_sfnt_off0000dc2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF444 11428 bytes
SHA-256: 137e13d7594ba1b6287fd229ddeba1c4058249dd34c037f3e9134efce42dc8c2

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