Malicious PDF — malware analysis report

Static analysis result for SHA-256 16722b0ee547225a…

MALICIOUS

PDF

87.6 KB Created: 2021-07-03 01:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 08086b6868ba89d8980a4fef2f13579e SHA-1: def58264975d57380585b08430a0316e246fe3b1 SHA-256: 16722b0ee547225acf99f44ab8b3e61f799ffb940ed027ac389bc78426f82152
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious and exhibits characteristics of an advance-fee scam, luring the user with prize or parcel delivery language. It contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 https://crysiq.ru/uplcv?utm_term=funny+roblox+ids
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c0159310160---xamibavonamo.pdf
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/63vv1qigebhvl3kfmhp4ias3es/depegizif.pdf
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c843bc0b97---dupugapemenibibagalan.pdf
    • https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/lipiwom.pdf
    • https://lesfeesdelhetre.fr/upload/files/batalodovoko.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160887a97456f7---65204909663.pdf
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f96bdd9bfb---39644453387.pdf
    • http://wagnerpc.com/userfiles/files/sixavezopudaxizekedoguda.pdf
    • https://mednet.mk/public_html/upload/userfiles/file/18480972256.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc7059255e---butiduxubawuzuku.pdf
    • http://konyaozgunmobilya.com/userfiles/file/76740019492.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607379980cb11---sakolobiripin.pdf
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160929e11220c4---53418462920.pdf
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160787f8af3bea---86914436899.pdf
    • https://fnb-concepts.com/images/uploads/files/jawazataxulelowelir.pdf
    • http://playfromhome.org/clients/4/49/49939bf6a151252ba1adfe53d1befa29/File/luviwikus.pdf
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160b01a9db6fc7---litamibixovesubowikun.pdf
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/0869e5096cd609d8a6ffd83d98bc48a1/84882235744.pdf
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609654be305db---19586399491.pdf
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a03ee7f042e---10843656660.pdf
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be0dec1a2d0---81146352408.pdf
    • http://accessprecision.com/userfiles/file/masoxufonemafoluripexadev.pdf
    • http://brownewingfamily.com/clients/a/a4/a4d7a48ed280e719b438ae57db99af5e/File/34259583425.pdf
    • http://womenshealthcarenp.com/clients/2/29/29a32d4da59f0b4eaa4573e1354aeabc/File/77928414264.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_off0000f3f7.bin
63718d4ed61c37bf87544903b56ce6bc2c3d82c6d670f163bab0a5fe733f7ada		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F7 17612 bytes
font_01_sfnt_off00012220.bin
9f4dd4bf2b28dd63b2ec81afcf439ffbad03ff399391120bbda1928cc117fa0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12220 10284 bytes
font_02_sfnt_off00013949.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13949 16792 bytes

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