Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dec15292b9d9587…

MALICIOUS

PDF

95.3 KB Created: 2021-08-22 04:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: f930f5bfd7779e3c0faef3a1aa1e2101 SHA-1: a5774d86045c18de26e5d94f9e26422c0a22ea8a SHA-256: 2dec15292b9d9587f36e39c7d5bda69add6219db2ec2f066b3d060bf1e31c45f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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://theheavent.com/userfiles/files/5666960197.pdf In PDF document text
    • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/fubezedagugomilikaxim.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607048e33dbb2---veroralimudotikitozeviwa.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/30f2c8ede63678e11775ccff9653a0c1/sakijugukuzorir.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092b2648b8c0---rizomisobexipu.pdfIn PDF document text
    • http://townsendrogersfamilyreunion.com/clients/9/91/912616e09393d205379ff76530a10a1f/File/29390269994.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/14374877940.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/dc6f55e15d8fceec5f0e5447ca83384a/riboporofawo.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/3c1afd732a5be33d16f17120112c0bcb/28041563204.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099cfe6264fc---pumitilawuxe.pdfIn PDF document text
    • http://22743333.com/userfiles/files/zugiredijotalukabiwu.pdfIn PDF document text
    • http://watch62.ru/files/files/gikusuzeveziragenefivefu.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4123e2d6a0---mijaturazemafebesuvude.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///regovumamapolobebizef.pdfIn PDF document text
    • https://sportsht.com/userfiles/file/34678504955.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/c7d0f2ad97b6773ee57d32b9bd4fab64/dadiruxazenafil.pdfIn PDF document text
    • https://whiteelephant.co.in/wp-content/plugins/super-forms/uploads/php/files/e9936ad74be3c0ab6029840670f51035/30712970257.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/eeb4c552ce341b9598d504c88add0f57/mimekoxatodanofef.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608db5d10547d---95647524006.pdfIn PDF document text
    • http://korea-seals.com/ckfinder/userfiles/files/zudebisazesokabilojabe.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/vp4oi8rdi4gnctvunvatpprj5l/17562037930.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/16b9644f8de1c295339213c67236ae98/64759246148.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160913924290d2---42398497754.pdfIn PDF document text
    • http://redigonda.it/userfiles/files/vutulajeroxanomeno.pdfIn PDF document text
    • http://reversetheclocknow.com/ckfinder/userfiles/files/fasanasusixetegimifas.pdfIn PDF document text
    • https://edu-mate.kr/_UploadFile/Images/file/58119371447.pdfIn PDF document text
    • https://caffedisanto.it/file/zenivo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=blanchard+olivier+macroeconomics+pdfPDF 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_off00010d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5A 10908 bytes
SHA-256: faf5bd81b15b8bc7974b6b8d5e79b5449ad7d56d2e061abd41226adfb4c7d3a4
font_01_sfnt_off00012661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12661 18616 bytes
SHA-256: 9cd646a1ac6679d3a3a53038eeaab1d22e8cddec0643984324cefad930834e74
font_02_sfnt_off00015644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15644 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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