Malicious PDF — malware analysis report

Static analysis result for SHA-256 d472fc861ec10097…

MALICIOUS

PDF

106.1 KB Created: 2021-06-25 19:14:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 204b022dc1e11cab0ba44ef6a1042cf5 SHA-1: 4dee414c029ddf08f99e501971b0dcd0a729620b SHA-256: d472fc861ec100976c0cc37864b53e656a6bd3cd377d1966d178198d4c1e5f61
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories. These links likely serve as lures to phishing sites or downloaders for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607221963fb7d---wexotokugizeropovinabe.pdf
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b06416a9ae---xozejigulozituxofil.pdf
    • https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/c66e8a64bb171a792aac63c2d9c70a21/3822523424.pdf
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/0384180ebddc9e10773714bc577b40d0/xuwulurerulinifepivuzuze.pdf
    • https://bem-sa.com/img/file/jijotelozifus.pdf
    • http://asvpp.fr/pdf/felukeloz.pdf
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/68f113ed8a114fc8fce9524e2b544546/60084325732.pdf
    • http://asfus.net/virgsurv/userfiles/file/busurolekefozenop.pdf
    • http://yjccnc.com/upload/files/53207711397.pdf
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/c87b27abd2fcd8e15382bd8b2efc88ee/92357362975.pdf
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/9e5ae0df92c0c837aa76feaa79cd4511/wejoragiliguvuzu.pdf
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160abc27310512---25426640353.pdf
    • https://thedestinbeachhouses.com/wp-content/plugins/super-forms/uploads/php/files/14f5864af0132eac714954a81b3edd32/zabikudevosajob.pdf
    • http://interiorconsignments.com/media/file/61181724764.pdf
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a67649c4f0d---mujolovefoponedob.pdf
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e020168582---55553989107.pdf
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3ff31cbc5---lasezekalelovobeg.pdf
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1fe766b783---55367013442.pdf
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a764de39aa9---332694071.pdf
    • http://re-view.online/fckFiles/file/54204754636.pdf
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bb3c7be213f---dixerikebajofanakafunuvin.pdf
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ecc1997fcc6a0d26d298180a971b9c46/fitevudiwa.pdf
    • https://vijyaiprismcrm.com/userfiles/files/nuteloporazawupagelujine.pdf
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9df020c8e---pinume.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d067eab6e---27302862514.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=pogba+to+united
    • 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_off00012d5b.bin
dc72582a396ac4b2576d766ad2db3e73459edb03d1e6053ad5879e87b70baed9
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D5B 10348 bytes
font_01_sfnt_off000144aa.bin
309112b24b431faedbdbf8cc3d68bfbe406513398ac2d757206a9a5cc4de578e
pdf-font-stream PDF embedded font (sfnt) at offset 0x144AA 30304 bytes
font_02_sfnt_off000181f0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x181F0 16792 bytes