Malicious PDF — malware analysis report

Static analysis result for SHA-256 9da034a704515f7d…

MALICIOUS

PDF

84.5 KB Created: 2021-09-12 17:37:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: d777ea7738b229351eb26038fd3a8d89 SHA-1: cbfcc6d1752506dba33bd8deaf6fda6d46eca9ca SHA-256: 9da034a704515f7d8b407f95b4c68f2b6beb495d44b098dfbfa18036c1233a55
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links pointing to external PDFs hosted on compromised WordPress sites and disposable domains, suggesting a phishing or malware distribution lure. No scripts were extracted, but the presence of multiple malicious URLs indicates an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://incense888.com/uploads/files/202109060920412142.pdf In PDF document text
    • http://geraldinekilkelly.ie/43372498726.pdfIn PDF document text
    • http://traktorpulling.de/ablage/userfiles/files/18311392539.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132734283e3d---54864564933.pdfIn PDF document text
    • http://vitalbafitnessclub.eu/userfiles/files/wajebi.pdfIn PDF document text
    • http://silesiacapital.eu/data/file/nafigopupinasujurome.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/064274f6fd448552b5ce490032f1614c/luxafowuwebuzemugeziginu.pdfIn PDF document text
    • http://a-pro-peau.fr/userfiles/file/bogetazuf.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/t7ksgbaukpuno35rv5v4cs3evi/3526952548.pdfIn PDF document text
    • https://zhbiotech.com/CKEdit/upload/files/fisodozifogomopit.pdfIn PDF document text
    • https://digireg.org/upload/32797289662.pdfIn PDF document text
    • http://artin-intranet.com/ckupload/files/56079151058.pdfIn PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/78589100629.pdfIn PDF document text
    • http://tuttotop.com/userfiles/files/39357948136.pdfIn PDF document text
    • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/63236992917.pdfIn PDF document text
    • https://2b3la571ga-70p.com/contents/files/renod.pdfIn PDF document text
    • https://www.retake.dk/ckfinder/userfiles/files/74330176533.pdfIn PDF document text
    • http://www.kigimex.com.vn/ckfinder/userfiles/files/fegijusavegagivuxapow.pdfIn PDF document text
    • http://ecolservizinettuno.com/userfiles/files/98592294544.pdfIn PDF document text
    • http://sanyosushiglendora.com/uploads/files/32977499227.pdfIn PDF document text
    • http://tythb.com/uploadfile/files/pudarokujaxudofo.pdfIn PDF document text
    • https://fainitelecommunication.com/public/editorfiles/file/tegegiludumubovugomibe.pdfIn PDF document text
    • http://hoteldarim.ir/basefile/hoteldarimir/files/12133673848.pdfIn PDF document text
    • https://volpatoebrum.com.br/_common/admin/scripts/ckfinder/userfiles/files/7378114492.pdfIn PDF document text
    • http://mansiya.com/uploadfile/files/58219024332.pdfIn PDF document text
    • http://boxerdapolenta.com/cmsimple/images/file/48219075381.pdfIn PDF document text
    • http://myepres.com/HotelEstimator/userfiles/file/roxigunedaw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=gun+gang+modPDF 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_off0000dd79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD79 21472 bytes
SHA-256: d6f9e75cb4e3231f7bacdbea5bbbcf164b9c5691110eba2fc4eba4ec6edf1d30
font_01_sfnt_off0001165f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1165F 10096 bytes
SHA-256: 8681fd2533da2279f1d73b1e909af738dffb6352d353b804f823b8d678637ff1
font_02_sfnt_off00012c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C9A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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