Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4976030e7ede7bb…

MALICIOUS

PDF

83.8 KB Created: 2021-07-16 05:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7624e5425d8d92af7c8e0a30cc835b5a SHA-1: 7eb709e1a2c77c3fcb57a949e6b3479619b599d4 SHA-256: f4976030e7ede7bb35ab0e7f2c93e5a98d7d81157ce3c759344fa1161f107f9e
196 Risk Score

Malware Insights

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

The PDF document contains multiple links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's purpose is to trick users into believing they have won a lottery or prize, requiring them to pay a fee for delivery or processing. No scripts were extracted from this sample, but the embedded URLs and the nature of the lure point towards a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://laborke.ru/uplcv?utm_term=bernadette+peters+into+the+woods
    • http://kasintorn.com/images/upload/files/70817127420.pdf
    • https://www.hausbootgeiseltalsee.de/wp-content/plugins/super-forms/uploads/php/files/odaaki8ksps25o9cntg2l8mpps/sibifexeviweg.pdf
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609d346474066---80919512776.pdf
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/fb0fca3d226f2e4ea8dd642408cd7685/332363246.pdf
    • https://xehowo24h.com/images/ckeditor/files/44439838390.pdf
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0be165213---lixaxodujoxav.pdf
    • http://deccanquest.com/konadnew/userfiles/file/59571762253.pdf
    • https://adlinefor.com/home/webagen/public_html/korn/data/file/48431824085.pdf
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/25a5b72d343dadf62b0c570f760ea280/xajanevami.pdf
    • http://thrifty-uy.com/files/others/wubefokunurodazu.pdf
    • https://szekszardportal.hu/userfiles/file/gepolit.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/tan964ikrumhg2l1484881j9f4/zafogorunitivorawewelora.pdf
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16076f38c31c9c---52092595512.pdf
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160878b18989ab---75952294857.pdf
    • http://whewfamily.com/clients/12004/File/42921382379.pdf
    • https://moveo-sport.pl/userfiles/file/batomulefozu.pdf
    • https://prtl.pl/userfiles/file/10219528207.pdf
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/8c8909d9f49ee63bc9aa711dc0ba5c65/38575797739.pdf
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926abe6000a---jizov.pdf
    • http://eventechsite.com/files/files/lopobiko.pdf
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df1e8f4c4c1---19781531708.pdf
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/1a3a993385c8b81520e53e6db6dbcfb8/loxosutalopusewo.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_off0000e36b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE36B 16792 bytes
font_01_sfnt_off0000fb7d.bin
43e46120e64d84a2efd1ab603be22ea3a4332d55853c345e3c81e3f6e6e10624
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7D 17316 bytes
font_02_sfnt_off0001284b.bin
6352518f26693440135b311b8bfebb7cddb510e5c11e68da668dff1200074ac3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1284B 10580 bytes