Malicious PDF — malware analysis report

Static analysis result for SHA-256 702b42e039be44a3…

MALICIOUS

PDF

73.8 KB Created: 2021-10-09 22:20:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 1c12686b22b69d9fd17697cb1a3bb1c6 SHA-1: ea09eb8c9894cef930448e820682c69f6a2908e3 SHA-256: 702b42e039be44a36a0ee3a00a1a2a5c6ac1f83a070f16982081001e5bbe9486
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised websites, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://matrixpaint.com/ckfinder/userfiles/files/58013233884.pdf In PDF document text
    • http://travelshops.pl/userfiles/file/54766364471.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/f1aea3b34ccd0e29aefb2b2ced17010b/2868396385.pdfIn PDF document text
    • http://antonio-pelella.eu/userfiles/files/gepukatelikiguk.pdfIn PDF document text
    • http://wsm.hk/images/files/96541514563.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613efbc35ff71---legibutituwuxanem.pdfIn PDF document text
    • http://trips-in.com/ckupload/files/29321293963.pdfIn PDF document text
    • http://lohoithaiduong.com/uploads/files/67316979829.pdfIn PDF document text
    • http://yuh-tarng.com/userfiles/file/vuvigepamog.pdfIn PDF document text
    • https://www.renouer-auxerre.com/ckfinder/userfiles/files/16241354390.pdfIn PDF document text
    • http://hakasasi.id/userfiles/file/81792128396.pdfIn PDF document text
    • http://alianzablue.com/aym_image/files/mefadokapu.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16160446a52dc2---48100128198.pdfIn PDF document text
    • http://xn----itbbfrdrdbd4bgy6gi.xn--p1ai/webroot/files/files/rukugegekuzivotivepi.pdfIn PDF document text
    • http://tropo-design.com/ckfinder/userfiles/files/49451978494.pdfIn PDF document text
    • https://njshore.drinkpoint.com/uploads/files/gikev.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-9-25/20210925065259632952.pdfIn PDF document text
    • https://dm288.com/slicice/file/zefiniwakirusixuruka.pdfIn PDF document text
    • https://www.totalblissbeauty.com.au/application/third_party/ckfinder/userfiles/files/tuketivoma.pdfIn PDF document text
    • http://vers-ma.de/userfiles/file/40233161533.pdfIn PDF document text
    • http://drivingtesttips.ie/fckeditor/userfiles/file/kisunemovenemobamuw.pdfIn PDF document text
    • https://spacio.hk/attachment/file/45739571003.pdfIn PDF document text
    • http://stonepigments.com/userfiles/file/25873695368.pdfIn PDF document text
    • http://kayapalinakliyat.com/file/juputok.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=sharptown+md+apartmentsPDF 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_off0000bc01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC01 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD418 10680 bytes
SHA-256: 511b04c8689ad61771698b12bb96a981a060b289f82dd60808ba1f58f83708f8
font_02_sfnt_off0000ec72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC72 17680 bytes
SHA-256: c5b84f1dc026a33a6032a4942f9ee0c132dddf99c4ffaf7cecbc1dcf8d871958

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