Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fdf44d130eb812c…

MALICIOUS

PDF

95.0 KB Created: 2021-06-29 21:34:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 29a9dcd75ddf0cf4fbae41904818a32c SHA-1: 682fade9f839ec600ece076c34558010ca97cda7 SHA-256: 9fdf44d130eb812ca08ce05cdc4e8b73f829d704c29c48d5eda82fdb5b3459f2
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution attempt. The document's structure and content align with common lures used to trick users into downloading further malicious content or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://philabc.ru/uplcv?utm_term=operations+manager+trainee
    • https://ottenburger.com/userfiles/file/movexujovo.pdf
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/1fbafdcddfbb3fd706f44c34597b0b11/24551345167.pdf
    • http://moneymaker-gold.de/files/11766811668.pdf
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c6f5bee2ce9---bosasezawe.pdf
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/b72db95827bbdee43d663d4b4c7b51a6/77566402083.pdf
    • http://iphysiology.ru/upload/botugutevanigekegofetoze.pdf
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160988d3c84a89---76375035140.pdf
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/9c522a29d9163d4926f70b6a85daaea1/38350053108.pdf
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/0e435f0eb483fcdf9f9711f187bc3fd4/sugujulawiw.pdf
    • http://workcoop.org/fckeditor/userimages/file/20210610150559.pdf
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac090487a80---80148950385.pdf
    • http://akinmedical.com/uploads/file/20107329358.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/16082476d1e42e---vevizenir.pdf
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607caafd48bde---zaparomubaxorogop.pdf
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b9cb2f5bfd1---soxusup.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0cfaa179e3---jabenuzuzojawefatodof.pdf
    • http://studiotecnicodavico.eu/userfiles/files/53989706905.pdf
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/o1ljpm4ab6b8rc4qud3boi5pom/14131235821.pdf
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/75194a4fb516a6f29b40db4759a99853/18558955844.pdf
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/1s11bn0a2tih20lc5qgs1vhbqr/ginizimenojuvuka.pdf
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3db9b72bbe---julol.pdf
    • https://jbdclothiers.net/emailer/userfiles/file/94753912776.pdf
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/7eef6ec63fc6017ecf775e8bd9a33ec8/rabovuxoxalomu.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_off0001125c.bin
5a3330a09b0bffdea7dd34702b640bea5cac27f6777986945215a19b2cb95f0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1125C 10576 bytes
font_01_sfnt_off00012a85.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A85 16792 bytes
font_02_sfnt_off00014297.bin
76080076f1468d439f7cd7c1c8a533bc634be27f70ef5987ee036614df676b0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14297 16980 bytes

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