Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3b249f633e82e2…

MALICIOUS

PDF

87.1 KB Created: 2021-06-27 08:37:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3d803a2997b1bf229c07d6adf3b9c5f8 SHA-1: 4dcdfc0ed23737fa3eb04a188e67da2aeca642f9 SHA-256: 6a3b249f633e82e27a0c3ad8788ee58f068732eb73265637458af4b2a2e11c52
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are hosted on compromised WordPress sites, indicating a link farm designed to redirect users. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly suggests the document's content is intended to deceive users into paying fees for a prize or parcel. While no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristics point towards a phishing or scamming attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16098c45770f4a---95739341671.pdf
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b969e76a39---mawazon.pdf
    • https://t2sc.me/userfiles/ledopamemevevadoxote.pdf
    • http://mamnonkitty.com/webroot/img/posts/files/98232763941.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099397377272---68203070221.pdf
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/a70e0304d2bf61e06c31cbdc77cbb45d/6531396362.pdf
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/99949095043.pdf
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/a0bd8451d532a13990bcc628c823bdd0/65763157105.pdf
    • http://dfh-consulting.com/userfiles/file/85125010957.pdf
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/hd2sp6bqmar3nlkf3lck6nptv1/52972739281.pdf
    • https://advantagelic.com/singhania/downloads/file/junuxerezez.pdf
    • http://podiummoda.ru/userfiles/file/99340524830.pdf
    • https://barcelona-health.com/files/galeria/files/gejeludofaguwetuso.pdf
    • http://robertoantoniz.com/resources/original/file/jigosaboxakitijinetukoxag.pdf
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf4e451f20---36271429233.pdf
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/95d7783f7f8b34ef419cf67bd140a921/65517006520.pdf
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/fe4e63ce52aac7fc7823babd18b23573/giziduzifitelopeginobaniz.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba73ffc5d05---75157570928.pdf
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/c880df3d5f485357e27b0aeaa80ac340/mifefulikefogafe.pdf
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608acd3202255---64811109915.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/egjchnoeu3fn56q54uvep0jtq2/pukoferuvegur.pdf
    • http://arohitourandtravels.com/userfiles/file/lenenodalofileranagabaw.pdf
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac418293f6---2349193053.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=bi+monthly+pay+means
    • 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_off0000f23c.bin
6e031123b8ad3bdb080698755c42cf3f4c6363877b789f6b9bea2c991acacf32
pdf-font-stream PDF embedded font (sfnt) at offset 0xF23C 17080 bytes
font_01_sfnt_off00011f1d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F1D 16792 bytes
font_02_sfnt_off00013734.bin
0c7c2126cb46a387bd77c4351906f994e66353c01e445b48a558f3ab20654e68
pdf-font-stream PDF embedded font (sfnt) at offset 0x13734 10584 bytes