Malicious PDF — malware analysis report

Static analysis result for SHA-256 a007fc5223cba3f8…

MALICIOUS

PDF

69.7 KB Created: 2021-09-25 02:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: c321ff6ba182a8fd1ad03c763ab72e72 SHA-1: d6cc77fdb35aca89ae4995ea7c4f4f2c1032f26b SHA-256: a007fc5223cba3f8e234d456ad2adf4ef91310608d7987b3f1df48c3f4bc3e2e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the nature of the document as a collection of links on potentially untrustworthy domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://huntic.ru/uplcv?utm_term=crosstour+projector+p600+connect+to+android+phone PDF link annotation
    • https://ms1oke.com/contents/files/68887214748.pdfIn PDF document text
    • http://bilafafafa.com/shopadmin/upload/files/mefupuxiregitugibojim.pdfIn PDF document text
    • http://video-cycling.de/files/file/75452432861.pdfIn PDF document text
    • https://binarbaidservices.com/public_html/userfiles/file/xevaj.pdfIn PDF document text
    • http://www.gpe-el.pro/ckfinder/userfiles/files/94195090141.pdfIn PDF document text
    • http://trineckevzdelavani.cz/webpagebuilder/ckfinder/userfiles/files/lovanetuduwubekorumuzeb.pdfIn PDF document text
    • https://ibrahimkoc.com/images/Media/files/98758684938.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614a3213a3e43---bategimof.pdfIn PDF document text
    • http://dolinakrzeptowa.pl/public/upload/ckfinder/userfiles/files/30291885012.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/15773498887.pdfIn PDF document text
    • http://nifaelectronics.com/userfiles/file/xizupifubomozomatimik.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/3philm3mak2mv1n4f336l3jkv1/losewasaxomufemokijabuju.pdfIn PDF document text
    • https://dpengineers.info/admin/userfiles/file/kavebene.pdfIn PDF document text
    • https://granitabrasive.hu/editor_up/62352610975.pdfIn PDF document text
    • http://maximaviajes.com/FCKfiles/file/natepubatugujijobep.pdfIn PDF document text
    • https://pasifikendustriyel.com/userfiles/file/jiwitemokigejopofesodi.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/144f9125a2783daad6290668cb8cff12/63640255115.pdfIn PDF document text
    • https://rheinfurth.de/userfiles/file/perus.pdfIn PDF document text
    • http://detskaoptika.cz/ckfinder/userfiles/files/3499959980.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/059955b7e1c036f89c3fb30d1bf97055/3018615624.pdfIn PDF document text
    • http://chithanhplastics.com/uploads/userfiles/file/zosuwidepopuniloxekabuwa.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/80280534490.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_off0000ae7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c68d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC68D 15940 bytes
SHA-256: afb1640240e8da3653b11e98d17978a63c780fc7a9c9c07de51da38cbff03168
font_02_sfnt_off0000ef26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF26 11116 bytes
SHA-256: bcb80a9d62aa9d3555dad886e5b1e0b38a40b07e9dc0a48579fcfb48d5dfd2bc

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