Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab95b54525fa1883…

MALICIOUS

PDF

93.2 KB Created: 2021-07-02 03:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 54316a90b9a300c12129858c3ef64d0a SHA-1: b80529c04cc75d2b25139cc6c10985cd77b742b3 SHA-256: ab95b54525fa1883aec011d52681d5374cf9465efed19866e39fdd4c7b4e5009
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting. These links likely serve as a lure for phishing attacks or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://drafthe.ru/uplcv?utm_term=lizzie+real+housewives+of+orange+county PDF link annotation
    • http://marcth.pl/media/fck/file/95103449083.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d5e12603526---xudoro.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/59cpfk3tl6pprkvfq500lbkof6/79944511285.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af924d32125---87084382215.pdfIn PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16098db59d0d15---giviretosululerivigitap.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/73561207903.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/xaxatagifudinugufejudupos.pdfIn PDF document text
    • http://www.odnpoznan.pl/fotki/file/file/xesojudenotafiwumetomu.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/23931411946.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9ac9a11a0b---xujadijebamitojavivunad.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/7ijkmkea4p7rjh2tc1mg6n0re1/pedikilapabal.pdfIn PDF document text
    • http://euro520.net/userfiles/file/1622401257790932613.pdfIn PDF document text
    • https://swalaya.in/userfiles/file/59937049603.pdfIn PDF document text
    • http://ikhmongol.mn/ckfinder/userfiles/files/62197220468.pdfIn PDF document text
    • http://winso.tw/userfiles/file/86233624663.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/94379673040.pdfIn PDF document text
    • https://menu2uplus.com/images/file/gagatixabujabare.pdfIn PDF document text
    • http://614move.com/clients/4890/File/dubugumusasejuloroviris.pdfIn PDF document text
    • https://apskarota.org/userfiles/file/gipomalotisedebadomodunoj.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b37c258b78c---29325289044.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074bfcb208c3---90518879889.pdfIn PDF document text
    • http://www.deep2001.com/images/library/File/fenedirajedikumotida.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/0b8d22da39dda2f17bb32449d2dd3c7e/27665628564.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-1/20210501071708951686.pdfIn PDF document text
    • 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_off00010771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10771 10996 bytes
SHA-256: 8da3ec4cbe809578aad5a404d4a958fee11afd3fd1fcc14e49bda731689b18be
font_01_sfnt_off00012110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12110 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13922 17676 bytes
SHA-256: 6840375e80290bb555cbf6efb8fd3352f5ac976fd76b9ff5182faa4c2a4752e1

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