Malicious PDF — malware analysis report

Static analysis result for SHA-256 449fddfd4aa2949a…

MALICIOUS

PDF

89.5 KB Created: 2021-06-26 02:08:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 84c0bfe15ae974d6361e028de6326758 SHA-1: c6bfe9bd0b2af6974d166b8ef257b354c316ab53 SHA-256: 449fddfd4aa2949a8f4fb6fb87d7f5a394cddb18ae8862cfdcc7464953806c0a
196 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and flagged by an ML classifier, exhibiting characteristics of an advance-fee scam lure. It contains numerous links, many pointing to compromised CMS upload directories, suggesting an attempt to distribute further malicious content or phish users. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the overall structure and heuristic firings strongly indicate a malicious intent to deceive the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://malashealthcare.com/userfiles/files/72226301403.pdf
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c94bbaf8d---mojotegulek.pdf
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16078338c5d4d6---34710055580.pdf
    • http://irollee.com/userfiles/file/wedukudodezasekopi.pdf
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/guui77cts1j2csvr4jmtp47un6/83846818155.pdf
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e6125c9d6f---tabegevefirizivepopinef.pdf
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160791bf2a28d2---6203140627.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e296e511ccb5ab9c09bc0252c4c552b6/xakokinaz.pdf
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a137b3b0e8e---96133701896.pdf
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/gnt3u9tsg1i6ubse9r8qu4mal5/wulukofogimisajibejumifas.pdf
    • https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/k2n00aecda4k2onbstr3ihu2r5/tibodugabe.pdf
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/067878d1597954b4d235ee0d4ea95486/24500993357.pdf
    • http://pivotal-technologies.com/userfiles/file/maredakojusigotad.pdf
    • http://eyupsifalibitkiler.com/resimler/files/61926246824.pdf
    • https://people11people.gr/uploads/File/darosenimelisofoginanov.pdf
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/eibmkde9kvno6qlrkrebhk5n8v/14784184072.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609843fbda11b---musetalavipigafijam.pdf
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a5d65d95228---nilibavafipobegelala.pdf
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd5ad485c5---3866253257.pdf
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/e6r2tq8562a1issrv326bjjn06/lituni.pdf
    • http://jandebruijn.com/uploadimages/files/dasopixuvuzituwusigetut.pdf
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade09eebe52---24320992242.pdf
    • http://hcvitamin.com/webroot/img/files/gizivuxogumepepejer.pdf
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/26fd9fd100cf34ce88754c2d16c3d85f/kaneladujuve.pdf
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/5cfae26d306d6f663d7fab2944fff7aa/81926813975.pdf
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7970c8a12---kabuwoliz.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=promo+codes+to+get+free+robux+2021
    • 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_off0000f83b.bin
85f93b8dc5803e335973c2880cc17996f9bd28f0a96ec17f2f7e612f1e08c962		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF83B 17748 bytes
font_01_sfnt_off000126ba.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126BA 16792 bytes
font_02_sfnt_off00013ed1.bin
e956584cacd3ee4fdfb2081f6d326df3e40a810f56df23f4bb94e0ec52a8b566		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13ED1 11052 bytes

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