Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a02d9bdd4d5260…

MALICIOUS

PDF

91.3 KB Created: 2021-07-08 20:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: de14e7bec70d85258b7e25db2f7155c6 SHA-1: 8a2d0a44f97516d4d25847d137569e0be2a61153 SHA-256: b9a02d9bdd4d5260fb5b2175c567fda7f602d2e0dea0808a56ee47207f25d653
196 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable domains, suggesting an attempt to distribute malicious content or phish users. The ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://drafthe.ru/uplcv?utm_term=dynasty+football+leagues+to+join
    • http://mea-travel.pl/userfiles/file/rekegureropudaban.pdf
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb811ca400---48864486067.pdf
    • http://relocationservicesgroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0e842e0f4---54839620474.pdf
    • https://path.mn/userfiles/files/merifukiwepodiviwezuwan.pdf
    • http://lab4050.com/upload/editor/file/pesoze.pdf
    • http://adance0112.com/upfile/editor/file/jajasixosufefedof.pdf
    • http://www.deopendeur.org/imgUser/file/burojogasozemitojedi.pdf
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/e5uresedsd71fc1k6eimfm8gu1/koramaxusojupimelus.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6d3d1add8---vufafek.pdf
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/e0e2e5bf2e7f2c2b817aaadc8c08ec8f/witojozubesipafo.pdf
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607451d607fe9---12352846974.pdf
    • http://garderoba.sk/images/_file/54701711129.pdf
    • http://homelife-superstars.com/image/files/lebabipaki.pdf
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6916b59907---33029108706.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/f2m4cd4sfkvte0oeskonsvj8ka/75420712523.pdf
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/16b690df17f0723989b52392b6ec5b0e/33655250193.pdf
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/85c629ae6d6fb1ee749f2f293ea0c145/sapuneraxivato.pdf
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/1c89ca7e11dc20abe4e8c34e350e90c4/menumemak.pdf
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/a836d9b303d16c045c87c6e33eeea078/zexuzakuzotexezoxojok.pdf
    • 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_off00010042.bin
aed289024857354d82a1f6ab239fd2090aeff868dc07a64833fab700c1e5bcaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x10042 10772 bytes
font_01_sfnt_off00011935.bin
365d7b666444dbbd4103d5b55cc0b45034e67c443c2cdc541e0ed6fe297d333b
pdf-font-stream PDF embedded font (sfnt) at offset 0x11935 17744 bytes
font_02_sfnt_off00014803.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14803 16792 bytes