Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e92d37af0e62f20…

MALICIOUS

PDF

95.8 KB Created: 2021-07-07 22:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 502930f527775fcbadef26f73a8f6ae0 SHA-1: dd1af156dc326a5a382a756f5b46e37a52caba89 SHA-256: 0e92d37af0e62f20ac9ad2a7022dd469a1cce63ac46753869763769de950f82e
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories. These links likely serve as redirects to phishing sites or malware downloaders, aiming to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160844d610da63---wajumezelagesotoxajudibow.pdf
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b805b0131e4---10500755888.pdf
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160718323b1ef9---44362284967.pdf
    • http://thebankcardservices.com/uploads/files/18123228679.pdf
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090264e13099---54047907956.pdf
    • http://email-database.info/userfiles/file/85190823386.pdf
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1608aaa1a0c4aa---11961477447.pdf
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083633eed33e---31121199723.pdf
    • http://birnagarcollege.in/userfiles/file/53245328658.pdf
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f1748d77e---10910677814.pdf
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3b27c9331b---23270840566.pdf
    • https://associazionedynamica.it/uploads/file/karaliwudigufupoka.pdf
    • http://abwplazaview.com/uploads/files/7244090765.pdf
    • http://palakkadtourism.in/ckfinder/userfiles/files/pojadur.pdf
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/060736d5729a2abc1c49908f3290d4da/remudadetorapabezote.pdf
    • http://forglass.sk/userfiles/file/koribekufivuwegasafugefat.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608773d7b4ae0---xedemepoxepis.pdf
    • http://iuf.kr/pds_down/files/zakizadorere.pdf
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfb4eae44fb---simamevuvaga.pdf
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/2591b12b77ea6958c59137a8c36e4dc1/bolinizikozefovovi.pdf
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/a0282e34884b7fecaaaa5f20417552fc/21360221528.pdf
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3b296805e---wawosilavutog.pdf
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e5fae2581f5---kumozosajizorela.pdf
    • https://etonbio.com/newsLetters/images/file/13666435897.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=how+to+do+mythic+0
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011311.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11311 16792 bytes
font_01_sfnt_off00012b28.bin
234014fc389eb82f8d294d5ab0e421d6765482159a7c980debd23ad2e484cd22
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B28 10236 bytes
font_02_sfnt_off0001421c.bin
21758c69ed008fab283d6bbcd6c29415274ced487c28ca4e692806d7c09d4c52
pdf-font-stream PDF embedded font (sfnt) at offset 0x1421C 18588 bytes