Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fb9692265307c6…

MALICIOUS

PDF

89.3 KB Created: 2021-06-26 22:37:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c472c636928a234d5d2c52a76228ab1f SHA-1: 82c7003c1fdbcc25ef5d8e8a7ef66e5a5355bcca SHA-256: 74fb9692265307c6fa8c85293ddd2c005cd56421f19074ead8a789c107975c77
156 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to multiple compromised WordPress upload directories. These links likely serve as lures for phishing or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aabb6a71dd9---nuvatumasidegunumejulamo.pdf
    • http://gdbchurch.com/clients/43262/File/48325618298.pdf
    • http://dorp.pl/userfiles/files/wupakozanaxuzuwomejin.pdf
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084ce1c024d3---kedosovinazajokofizu.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160895558b0996---jufetirabasopifat.pdf
    • http://campbellelectronics.com/uploads/jazegawenafaxiv.pdf
    • http://artospace.com/pics/file/33842436412.pdf
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe73f1954e---20113071307.pdf
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/75fdc1ik3thog8abil4u04nk2c/lewepabajazipitulejadib.pdf
    • http://msslink.ru/userfiles/files/49333105367.pdf
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/307484ec903ba907d7ca013fb1f7f542/97891165461.pdf
    • http://prestopc.it/upload/file/vuzigikafefagudesufag.pdf
    • http://jullien38.com/ressource/site-image/files/jagugekigumit.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba3e859a39f---67161483130.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c0bdd4a333b---ligozowepewedusixatuw.pdf
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/cb053536caa26f612f1301215f6aabaf/44290826933.pdf
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160740d0446674---gotojifubalodivoruwimibit.pdf
    • http://lexen.ca/userfiles/files/57015103387.pdf
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/7fa13b76bfe99f34e32fb3d1d4d66075/18527757589.pdf
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/959679b1058ba61ef2faa6080552d0bd/radik.pdf
    • http://ipceurope.eu/assets/file/pakegaxiwo.pdf
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a3c1c3d33da---rusidudub.pdf
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070bc34dee54---xenenarelufibenebaroku.pdf
    • https://teenvolunteerhouston.com/wp-content/plugins/super-forms/uploads/php/files/c959cae65c4669a0026e777e3c4138dd/61028327813.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=six+little+babe+presets
    • 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_off0000fb2e.bin
1bcf200afdef3786f051b831f7382be8f92006c2ac3686ecefb04ead6e903e04
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2E 10336 bytes
font_01_sfnt_off0001126a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1126A 16792 bytes
font_02_sfnt_off00012a7c.bin
b31ef581facabe8ab7834c2927ab64dfde0bd247b43cbaf26c1c98f565fd9972
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7C 17296 bytes