Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe410d503f82891…

MALICIOUS

PDF

84.7 KB Created: 2021-09-10 12:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 15fd06bf010144a3e1c3189f880ca66a SHA-1: a04c933bae9c311441e9945eee230c466e23e350 SHA-256: abe410d503f828919fa3fc0d64357738c6737e9ab735b071b6b98b188d63d939
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to numerous potentially compromised websites, suggesting an attempt to redirect users to malicious content. The presence of multiple external URIs and link farm indicators strongly suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://florylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/89928237411.pdf
    • https://cplastik.net/data/cms/file/bukarosutasubep.pdf
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/161381d87a1649---79960371048.pdf
    • http://euro-ex.net/images/blog/file/59283250512.pdf
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/ba950c3117929781122cd1c8a61ade34/kejeliw.pdf
    • https://braintreeclinics.com/app/webroot/img/files/rokopo.pdf
    • http://www.cpiequipos.com/assets/images/user_files/files/55250117827.pdf
    • http://arniuniversity.in/ci/userfiles/files/ravurinoz.pdf
    • http://dpsnowodworze.pl/userfiles/file/59100495973.pdf
    • https://kaskad-74.ru/images/uploads/tajiwo.pdf
    • https://dusunceokulu.net/resimler/files/67324771097.pdf
    • http://baaningdoi.com/file_media/file_image/file/87201166925.pdf
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/fd616d591d0d8f30a1d083752337fad2/pobewobuwejatokab.pdf
    • http://energy-labels.com/userfiles/file/79419571288.pdf
    • http://www.deewanalarab.com/up_imgs/jefikureneduden.pdf
    • https://adtw1.elfjane.com/ckfinder/userfiles/files/84266961793.pdf
    • http://franceplus.fr/userfiles/file/58831838168.pdf
    • http://oreade-breche.fr/userfiles/file/8565914335.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fc6ccdb0b2---gonegirerilomiwadavumage.pdf
    • http://marchmontnews.com/imgs/file/64675548079.pdf
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/8eddfd71ae530400b65941cf807139fc/57474993381.pdf
    • http://unibox.lv/files/text/42526501628.pdf
    • http://madonnina.info/userfiles/files/57172036934.pdf
    • https://maftplayer.net/calisma2/files/uploads/mokuwisakekutibov.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=ball+slider+3d+apk
    • 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_off0000e2e9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E9 16792 bytes
font_01_sfnt_off0000fafb.bin
043200e07bd51f99016444af2483940ee7b61b1fc583e29d978c41a85b16348b
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFB 19108 bytes
font_02_sfnt_off00012d61.bin
e61c55074e496b769196b1b4b5279dce86866979aefdaa49bbc0c919bdca2833
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D61 10380 bytes