Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2a0d5e2ba668e0…

MALICIOUS

PDF

87.9 KB Created: 2021-09-02 02:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e28954dd54468d548ec4cec42a85deba SHA-1: e2216554aae60e12177ddd9e3b5c88d379477ccd SHA-256: dc2a0d5e2ba668e0cca7a2463c6e45e73248ad0635745bcd43c09cc7f8c3b367
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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 https://shop-ecobati.com/medias/upload/files/97007659341.pdf In PDF document text
    • https://lescourailleurs.com/upload/editor/file/60584931555.pdfIn PDF document text
    • http://stillincontact.com/images/mails/file/voruvofo.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160ada043a4768---67507444808.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aedfde2529e---livoxamojasezifenonux.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/0bf6a9472db301937a355ca2d76fdf89/34452787326.pdfIn PDF document text
    • http://dydlhx.com/upfiles/file///nuseputezifati.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3c74cbaeba---29733772498.pdfIn PDF document text
    • http://kondicionery-elektrostal.ru/upload_picture/file/dodafomufedevosugitap.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/c4d4fca65489caff414f03717175ba77/74322151147.pdfIn PDF document text
    • http://wonikqnc.com/upload/editor/file/1626536199.pdfIn PDF document text
    • https://ivantomanov.com/userfiles/file/90126132713.pdfIn PDF document text
    • https://residenciasanamaro.es/userfiles/files/46095500151.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609077e5c45c2---lajebiwu.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/ga5qv5gr7meih65c51d12hi70p/7517388056.pdfIn PDF document text
    • https://viettrungson.com/media//Files/63916032626.pdfIn PDF document text
    • http://cherryontop.pl/upload/fotki/file/66747417054.pdfIn PDF document text
    • https://www.chablis-gautherin.com/ckfinder/userfiles/files/67968012645.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/a69908b2743b145edc7d26dd0dcbe4dc/zodamifixatiliwopipazotan.pdfIn PDF document text
    • http://tuanayapim.com/rsm/files/63830357585.pdfIn PDF document text
    • http://angelofthewinds.net/ckfinder/userfiles/files/68512852328.pdfIn PDF document text
    • http://abwvictory.com/uploads/files/zagosadipami.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=funny+lines+from+christmas+moviesPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF01 18176 bytes
SHA-256: 56f49012fd6bd8792f3e73f90f1eb27b01cb03371870f9e1ab7224481bbc5129
font_02_sfnt_off00011e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E33 17684 bytes
SHA-256: 8ba3880ce4332c376bac9c2f31f31272753659ee194f77f813afa3d0bca573a3
font_03_sfnt_off000138fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138FD 10856 bytes
SHA-256: eca7f7cba124ad90f58e1e6998a1b1ec5cbb060a371d66e5f55eaf0caadb9a7f

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