Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d12ad79294b475…

MALICIOUS

PDF

85.1 KB Created: 2021-09-17 16:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 22a79be40a46ec4102142716c6bb1429 SHA-1: 8b8b4be64e0ccf10d968f966cce2590ceaf1887a SHA-256: 25d12ad79294b475a870bdb9ce5bfb21ffb468e163c49b0a6c2459fa10a9eeac
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML models and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to external sites, some hosted on compromised WordPress installations, suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the heuristic firings strongly indicate a scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://drafthe.ru/uplcv?utm_term=command+prompt+in+android+phone
    • https://deepex.hu/hirek/files/jebunadunawololupefu.pdf
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/10kt9hhh8e8it69175l2sm41vp/82890680289.pdf
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/38d4068eacccd4ef20171194b49148fe/40713940240.pdf
    • https://fier-forjat-valimet.ro/ckfinder/userfiles/files/vibavu.pdf
    • http://furniture83.com/upload/files/51593862208.pdf
    • http://delta-serwis.pl/pliki/fomolofuzawagidusuk.pdf
    • http://xn--80aafjbaeihgganggf9ajkncugh2a.xn--p1ai/pict/file/25154885358.pdf
    • http://chaitraglaze.com/uploads/83460031984.pdf
    • https://charterfori.ir/basefile/charterforiir/files/wibajizixexonogevadesito.pdf
    • https://wildarium.com/ckfinder/userfiles/files/dizazibeguzojezun.pdf
    • http://zulaikhatextile.com/userfiles/files/23360563501.pdf
    • https://geniodelweb.com/file/49972611071.pdf
    • http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xatujaxedegulumifaso.pdf
    • https://fallsplat.se/bildbank/file/jisuzetimotederixokokula.pdf
    • https://kisikana.hr/userfiles/file/94723958700.pdf
    • https://goodline.by/userfiles/file/luvosarekijimulutes.pdf
    • http://fantalife.nl/userfiles/file/4380235329.pdf
    • https://deepex.hu/hirek/files/mopuza.pdf
    • https://pmsp-me.com/userfiles/files/46102788805.pdf
    • http://mikomisushiwc.com/uploads/files/17201405866.pdf
    • https://www.mmgrowersg.com/ckfinder/userfiles/files/42799858029.pdf
    • http://engcaphone.com/_UploadFile/Images/file/93775655444.pdf
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d8c523b817---1534471222.pdf
    • http://massimomoroni.it/userfiles/files/wakukigibuwiroxudop.pdf
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612eaed18c296---87145339140.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_off0000e85a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE85A 16792 bytes
font_01_sfnt_off00010071.bin
09c6a01d46bfa3388de04ceb5ad18d513cf3577080f81d2579287c4411f17f7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10071 10476 bytes
font_02_sfnt_off000117ff.bin
ca4184a138c317d1be8b66a322fbb30bbdb884b1c680d260ada1273f5c5fd3f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x117FF 18096 bytes