Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba67b7bcc739afb0…

MALICIOUS

PDF

82.0 KB Created: 2021-09-01 19:18:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: b47b12ca891487e9b7c03af6f6f7e19e SHA-1: 5896577d1a64d074c6203d252019ae320a4c14af SHA-256: ba67b7bcc739afb0575f74384fe5bc08bcf4f2f3cee597764190e9665394d14b
176 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, including one pointing directly to an IP address, suggesting a phishing or malware distribution scheme. The presence of multiple links to compromised CMS uploads and disposable hosting indicates a tactic to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://firegallery.ru/img/upload/96971869282.pdf In PDF document text
    • http://goldstecq.com/userfiles/file/dodisapinifi.pdfIn PDF document text
    • http://bjqyms.com/filespath/files/20210828123401.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/3b86f00c92713609fadae238e3ee07f3/50196210020.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/b276c6f7bbc66853a969667ab0edb6da/jaxobowiso.pdfIn PDF document text
    • https://bancodevida.com/bancodevida/admin/images/image/file/vuduxiwojewajofomitajufeb.pdfIn PDF document text
    • http://shihtzufurbabies.net/clients/d/d3/d383cf0c90cf2d2391705d5438694b4c/File/90381217281.pdfIn PDF document text
    • https://areicon.com/images/file/29185067294.pdfIn PDF document text
    • http://williamshudson.org/clients/3/35/35bf74ce48b5c120232fd40fb4fe3e45/File/51122621233.pdfIn PDF document text
    • https://steammining.com/userfiles/file/62653352091.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a45ede89ef6---zofimijanilagulalesevimuk.pdfIn PDF document text
    • http://apnorajasthan.net/userfiles/file/dosumiwawodoluborodabojab.pdfIn PDF document text
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/93vmgledqe67q6nam2u3i9d78o/16639972960.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1a546d3c34---50667580494.pdfIn PDF document text
    • http://quaretti.it/userfiles/files/gogibubi.pdfIn PDF document text
    • http://bagliodeimille.it/userfiles/files/vumonutimibixejidib.pdfIn PDF document text
    • http://mkconline.com/landmark/ckfinder/userfiles/files/kukizawomatiwutelazalomij.pdfIn PDF document text
    • http://yer-krasnodar.ru/ckfinder/userfiles/files/90724545784.pdfIn PDF document text
    • http://cleangroupbd.com/ck/upload/files/dodupukuzexigera.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1612ea141e28e1---28386174301.pdfPDF link annotation
    • https://castel.ro/userfiles/file/25395527159.pdfIn PDF document text
    • http://mfcwestenkwartier.nl/beta/userfiles/file/gofolotojikujidivu.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c468227bbec---66238419219.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+do+a+papPDF 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_off0000e143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE143 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF959 9820 bytes
SHA-256: 777a98d160154c96365e4fa03c518dd5bf8db2faed62818347a4c05ec526bb6a
font_02_sfnt_off00010ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF9 16828 bytes
SHA-256: e945a03de6543f34c75320470e8c28ad87e3ab392a09401f06e2ca6ab332d1a6

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