Malicious PDF — malware analysis report

Static analysis result for SHA-256 68dac9f3edb5ed03…

MALICIOUS

PDF

80.0 KB Created: 2021-09-11 11:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 466bce44ea323a2d92737ded27cc4d3b SHA-1: b517ae40e8da59fe1af02eb1af147a8fc0625ade SHA-256: 68dac9f3edb5ed0312c6e32217d1985cede7f17dc7001ac242dbe6b1bbff7d0a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to compromised websites, suggesting a phishing or credential harvesting attempt. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. While no scripts were directly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://bellina.pl/userfiles/file/60349669223.pdf In PDF document text
    • https://autopits-directo.migrupoq.com/ckfinder/userfiles/files/kamerudovinofiniwu.pdfIn PDF document text
    • http://uhy-th.com/image/upload/files/jotizukadifenetakub.pdfIn PDF document text
    • http://stepasidemedical.ie/images/uploads/file/5030928519.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.info/upload/files/50843385262.pdfIn PDF document text
    • http://reguitti-engineering.it/userfiles/files/wofugoxedozebagewojokaz.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161372181d7333---gudexupenizilikad.pdfIn PDF document text
    • https://xn--espaoldetalca-lkb.cl/var/www/html/upload/file/15476910206.pdfIn PDF document text
    • http://lavalnerina.it/userfiles/file/98297185851.pdfIn PDF document text
    • http://prmakeup.com/Image/files/78254926448.pdfIn PDF document text
    • http://tischtennis-kiel.de/images/file/41610541467.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/32843579615.pdfIn PDF document text
    • http://wirheiraten.de/images/file/xigujo.pdfIn PDF document text
    • http://www.heatandgas.com/EditorImages/file/16220283326.pdfIn PDF document text
    • http://starwindows.ie/ckfinder/userfiles/files/mabaforegaxiximaroloz.pdfIn PDF document text
    • https://deltarealestate-eg.com/userfiles/file/ginavibufijakasixesap.pdfIn PDF document text
    • http://calisnt.com/uploads/files/kixixebirafurubujepef.pdfIn PDF document text
    • http://krajinar.cz/soubory/files/tamevexokute.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138c8a5a7bd7---xalitorogoxegoguxude.pdfIn PDF document text
    • http://wwsm-us.com/files/file/68689374061.pdfIn PDF document text
    • https://viettincapital.vn/upload/files/peliridamifinusokaro.pdfIn PDF document text
    • http://unitez.net/images/newtech/files/24721504833.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613334a89b197---rebeka.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=trova+il+mio+android+samsungPDF 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_off0000d453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD453 17628 bytes
SHA-256: 42d7bc82a09cc43bbe5cbfd378a57e51dfd50abd98c097ecfa36d068a963ce82
font_01_sfnt_off00010270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10270 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A87 10488 bytes
SHA-256: 0ef569d67dbb68500d28a695336b62f424f6d751dd95b121477dda88effab0b9

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