Malicious PDF — malware analysis report

Static analysis result for SHA-256 507ff9f1f743d8ed…

MALICIOUS

PDF

142.0 KB Created: 2021-06-28 13:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 243b4f2bc13ee2b476b70c56128008ed SHA-1: abeb12aa82c1d27e4dbe1c77864031ce8bd0faba SHA-256: 507ff9f1f743d8edfed2cf302519c209e2b486cd435afb2dd6f904344786c999
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm pointing to multiple compromised WordPress sites, suggesting a phishing or redirection campaign. The presence of numerous distinct hosts and links indicates a broad attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607568de58676---revewivaxidimuzo.pdf In PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608acccb75a50---5832718790.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/samubadelamipaguwawejo.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/mihg0ql67gjpk7n9gcpvs1cg3o/wiloto.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/2d17462dbf0579e0870f214a3e0d15b6/xigumelinuxumove.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e60d0b0abf---56847224412.pdfIn PDF document text
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c97ad5a0ec6---95644943120.pdfIn PDF document text
    • https://lawyerupsmart.com/tempimg/file/belobobakewusobi.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094213ae0e20---vobukolezena.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/silib.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16081c1ea25f00---xabudogajosulofi.pdfIn PDF document text
    • https://aedwea.com/upload/foto/91425376445.pdfIn PDF document text
    • http://phongkhamthienhoa.org/images/files/binepurowonaj.pdfIn PDF document text
    • http://nordicaluminium.ru/userfiles/file/72374045712.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a94a5bbbcaa---32629549141.pdfIn PDF document text
    • https://www.hausbootgeiseltalsee.de/wp-content/plugins/super-forms/uploads/php/files/3svluen8rn8lkmtc08ptfn8uhg/kimebo.pdfIn PDF document text
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/a95bfad8281d014f9a389c64d59cc94d/57014532220.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609ffa1264edf---43932655370.pdfIn PDF document text
    • https://mk-sito.it/uploads/file/25504172360.pdfIn PDF document text
    • http://servis-hradec.cz/files/file/36064075656.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a34a20c5a6b---wirogafejekis.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/s5gttd3h21nl7qqc21q0kfsco2/dawijenuzubozexesu.pdfIn PDF document text
    • http://xn--k1akb4c.xn--p1ai/userfiles/file/18559066210.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=mitosis+mover+answersPDF 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_off0001cd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CD62 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001e579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E579 10368 bytes
SHA-256: 73bc496a77903aee63195eaf27509c86e39eae3505dc9fdcaaee924370d3b080
font_02_sfnt_off0001fcf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FCF4 17496 bytes
SHA-256: 3c7008af2fd9484462d0074455620a682d69e8cd9dc9064a80efa9fae162a496

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