Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f350ee541cc96c2…

MALICIOUS

PDF

82.7 KB Created: 2021-09-10 02:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: aa358fba5e035dfca75ae8d929b32932 SHA-1: 8ad653e9c90f8f3d49e14f24969da647b0ce11ef SHA-256: 2f350ee541cc96c2e80b98b7bb5012ce9566eac8d3d597dd956c154ffaf12023
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm with numerous URLs hosted on potentially compromised or disposable domains, indicating a phishing or malware distribution attempt. The document body is heavily obfuscated, preventing analysis of its specific content, but the presence of multiple external links and the heuristic findings strongly suggest a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://hizlipin.com/calisma2/files/uploads/vepugumivulikazenowo.pdf In PDF document text
    • http://kidsjeodo.com/images/files/kufesenasogesoro.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16135096c7d132---bitupokujawebogitofow.pdfIn PDF document text
    • http://kxqcgs.com/filespath/files/20210902011718.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/c48271e0868ac3cc1b89f9fcb5f97033/32532931410.pdfIn PDF document text
    • http://www.mousumibanerjee.com/fckimages/file/59475100910.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a8204bb856---lumejoxatimejuxufak.pdfIn PDF document text
    • https://bdprescription.com/ci/userfiles/files/bufitunize.pdfIn PDF document text
    • https://epiphanych.com/images/file/51772991617.pdfIn PDF document text
    • https://abisspaandboutique.com/nbloom/fckuploads/file/mupipafanifuzoxulodowuma.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/6smjphdthhkgfeu285me4f7am7/wafizopokugowotog.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1613437c50bf37---pifunimuwimovuwokukexidam.pdfIn PDF document text
    • http://partnerplus30.ru/images/fornews/files/93891798024.pdfIn PDF document text
    • http://pathtojanna.com/userfiles/files/26560083009.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/161370d2ab6fa4---botigakakewojepavozik.pdfIn PDF document text
    • https://goldengatetaichiqigong.com/userfiles/file/50427817198.pdfIn PDF document text
    • https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/65463265339.pdfIn PDF document text
    • https://qwert5.com/psum/admin/userfiles/file/terodifijodaduxuwo.pdfIn PDF document text
    • https://juhaszautovill.hu/userfiles/file/27610687906.pdfIn PDF document text
    • https://www.q-jin.ne.jp/ckfinder/userfiles/files/48524239807.pdfIn PDF document text
    • http://kmjmt.com/news/upload/file/210902095013565961o11wsk.pdfIn PDF document text
    • http://www.pics4us.de/userfiles/file/mumojawanonesalanufame.pdfIn PDF document text
    • https://emartdeko.pl/galeria/file/54940920176.pdfIn PDF document text
    • http://www.propper-droppers.nl/files/file/52813991323.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=poco+f1+miui+11+downloadPDF 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_off0000dec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC6 10376 bytes
SHA-256: fb564d488822a97eb5a1f4ac7b4d18caa873b7ab285681b0845d754db67a51e0
font_01_sfnt_off0000f643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF643 17848 bytes
SHA-256: 6cb35c6b116cecf2bab7033b7f9ea74cbd53512a7028106230744294a12c17ab
font_02_sfnt_off000124cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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