Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ccae158b799a509…

MALICIOUS

PDF

123.8 KB Created: 2021-07-08 00:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d155467dc969ebe61a36f314c3d21b60 SHA-1: e848033702f5ee154aeaf471af6f7b48001c5ded SHA-256: 0ccae158b799a509d3eb70d5217cc32c820c48c5f94808eb91e013c466a9ab6b
196 Risk Score

Malware Insights

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

This PDF was identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of an advance-fee scam. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting an attempt to distribute further malicious content or redirect users to phishing sites. The document's structure and content strongly indicate a phishing or fraud attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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 http://hsound.ro/images/custom/file/81604674115.pdf
    • http://myucpb.net/userfiles/file/wupakuretajubifamemenito.pdf
    • http://bortran.com/upload/image/file/20210609123320.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081cd301b7eb---viremakijep.pdf
    • https://epos.nu/ckfinder/userfiles/files/vuvegififojigulima.pdf
    • http://coiffurenais.com/userfiles/file/vasokoxosuteme.pdf
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc94135917---fuvamexonelewul.pdf
    • http://oticonshop.net/ckfinder/userfiles/files/22511855275.pdf
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca020f79830---65571324907.pdf
    • https://alibabaoman.com/basefile/alibabaomancom/files/fuzitire.pdf
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/ruuetnutucqoke4lf5ep57ca4i/80234341586.pdf
    • http://ipceurope.com/assets/file/tudajezakatij.pdf
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078ea58c5ca3---63240862914.pdf
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c53551f0ae3---wonuriseg.pdf
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/991fd1778cc8ea7060066f95244e742b/bevupez.pdf
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/h66huuim3rhof3gg7ifkjhtq55/30488517545.pdf
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c0a66e3523d---39746260591.pdf
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/6855004fd29e865dc55c3adfe85f0744/12981502864.pdf
    • http://vidol.nl/userfiles/file/gifodaz.pdf
    • https://fenixfalt.com/userfiles/file/fesefaxu.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/e66365aa957bdfc99469fe29e2627804/2275773578.pdf
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d16c26aff1---5609422334.pdf
    • https://turkihale.com/userfiles/file/11265632211.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=luka+doncic+age
    • 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_off000173f9.bin
2d390f62cc58d3242038585028482c24e56c0cc69bee68a63e3c77e8bc9051ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x173F9 32496 bytes
font_01_sfnt_off0001b36e.bin
5cb72da306400192fdbad60fa176bc9c9c37167904193fa136e24e27322aaf6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B36E 10280 bytes
font_02_sfnt_off0001ca75.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA75 16792 bytes