Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29932d132404297…

MALICIOUS

PDF

85.1 KB Created: 2021-07-24 03:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 009d74a20bf98e3aadb279ea333a9c45 SHA-1: b70da4dfb65b0bf2cc7aa8ac63d70edc906a7c51 SHA-256: a29932d132404297d24ab77da5788ed6c72ec40c0694864708643b6b55fd9e4e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm. The primary goal appears to be directing users to potentially malicious or phishing content hosted on these sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ecb4bffbf---bilejupet.pdf
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/ocemsve4b7536eptc3k6898h50/91863497999.pdf
    • http://polymer-optix.de/userfiles/file/pamugobofebokewiwe.pdf
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/4614e2c48a74e9f9eaecd625a5b52842/22253973326.pdf
    • http://asupuro.com/upload/save_image/files/2612058649.pdf
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160dae26f454c4---54561309929.pdf
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16077279010f46---dulikipejolukunozore.pdf
    • https://bilalyapidekorasyon.com/userfiles/file/nexaniduduguzokan.pdf
    • http://hzdshg.com/images/upload/File/gatolaje.pdf
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c127a1e5b62---galamizomurimefekup.pdf
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16095b17dc8e59---75419043204.pdf
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a0f98c6c1---10189587996.pdf
    • https://podereilmontaleo.it/writable/public/userfiles/file/63654721818.pdf
    • https://communeouchamps.fr/userfiles/file/rerimezujavadav.pdf
    • http://mindentudor.hu/userfiles/file/doputigoxedisopono.pdf
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/nofj996o48a7m0nqngijv3042a/nerejuv.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9e0e2c9c1---23032153028.pdf
    • http://rebeccafantarchitetto.it/userfiles/files/tawesufapuvipejiror.pdf
    • https://sanidom.pl/img/file/98696728436.pdf
    • http://www.cenlafilm.com/siteuploads/editorimg/file/kozupadini.pdf
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/2qhvtjebimfgfcpu1d5sn4vrs2/tigezubunibedubixe.pdf
    • https://fenicia.uy/fenicia.com.uy/uploads/files/7073066196.pdf
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac071505b3---lojesasujipobasadodu.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+to+study+for+tennessee+learners+permit
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e88b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE88B 16792 bytes
font_01_sfnt_off000100a2.bin
04bedf2201a65b488e9298124705e3015bd20898b4bdf27813e43ea07e318832
pdf-font-stream PDF embedded font (sfnt) at offset 0x100A2 10948 bytes
font_02_sfnt_off00011a05.bin
acb71bdff141a1d47c37d852d943e66f9545e6d8a7db8fe6cd6b82c09de7efab
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A05 16624 bytes