Malicious PDF — malware analysis report

Static analysis result for SHA-256 8378f31905c7a23b…

MALICIOUS

PDF

104.1 KB Created: 2021-07-02 06:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: deac4471f9cc378c6776ffaf5c9ccfc0 SHA-1: 79ab3a1d86d628436ec0ecbe01d208690cf6079a SHA-256: 8378f31905c7a23b0b8520ee1e9dcfde84d35df4d6a7f6769fa906563b181752
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 appear to be compromised or disposable hosting, suggesting an attempt to distribute malicious content or phish for information. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious intent to deceive the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9737

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://40parables.com/wp-content/plugins/super-forms/uploads/php/files/f251f54550fad4b0b7efe6c2d79c7259/91540285185.pdf
    • http://acecaalcoy.com/userfiles/file/nizazakedovezujekekuzuja.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/vl2i18jrhhrdffobc89e0vtrs5/sojagupepuvawid.pdf
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/51d04a526f9023d1572a41bf57e2bb7f/gapesoxi.pdf
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4ae816ca4b---papaxukip.pdf
    • http://firegallery.ru/img/upload/87720708136.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/8699d87faf4085adfe3c7e111eea14f0/samadojijugorib.pdf
    • http://nutronicltd.com/userfiles/file/beniwitafog.pdf
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4c84569bc---47041205544.pdf
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/497d93d99cb85ed553e1adf70a04147e/20900617396.pdf
    • http://antwerp-reefer-tournament.be/argt/files/mebufubosinemotijawus.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/65299668fb1183ca7f078f268b9e3862/57721982328.pdf
    • https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/70a468301dda573355edbe5b90e3ec94/motaludimadi.pdf
    • http://vce34.ru/attachments/file/63245941761.pdf
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/d37b52cf59541147f1410e7e64f44bec/93991474606.pdf
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f4609d9ca0---22597078722.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092462fa6c35---wusezixeleb.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081375647961---11860693384.pdf
    • http://verkaufs-akademie.com/userfiles/file/5769459837.pdf
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/fdd3de6ecbaf2118229938fb1da7c306/14746446501.pdf
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16098344d1140c---3299799769.pdf
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608764723f80e---gobaki.pdf
    • https://minlinart.com/archive/upload/files/2558011081.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=ideal+meaning+in
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000efb6.bin
7a0e5d9df7c6b724d7c61aaf2282db234bb22f80bf09466488bf4f0f5d06995c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xEFB6 20240 bytes
font_01_sfnt_off000112e7.bin
6fcca84ab1017b19be10adb725eb41a4d908a6e70e742feca44f774eaf4e30cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112E7 10056 bytes
font_02_sfnt_off000128e3.bin
2da2faed68060f4aad6533ae5a7686a7396c2419ce1e549447ef9c5164202a05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128E3 26900 bytes
font_03_sfnt_off000169db.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x169DB 16792 bytes
font_04_sfnt_off000181e8.bin
88e6480cf88d1d78895db71a4abe767a788873e05e29427cdea84a295e8e713c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x181E8 4532 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.