Malicious PDF — malware analysis report

Static analysis result for SHA-256 be18692deea37248…

MALICIOUS

PDF

84.8 KB Created: 2021-09-13 21:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b42b948520601125d9bd187e3083d17f SHA-1: 24b7e72dd1f475d61497ce9fe8e2519f37ba80b3 SHA-256: be18692deea372481e5d38d10f0ad32c3c92b3ba8123e1b668f71b1107b6156e
196 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains numerous links, many pointing to compromised CMS upload storage or disposable hosting, suggesting an attempt to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a lure for phishing or malware distribution.

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 http://thechitay.com/uploads/userfiles/file/zoridiwizobapodixaji.pdf
    • http://idroter.org/userfiles/files/94129128087.pdf
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16136b35b32738---nonizupufumepenasare.pdf
    • https://woodfur.in/userfiles/file/sufaxos.pdf
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/24f56957f489c57513c647b291f27301/40820194429.pdf
    • http://eco-building.cz/UserFiles/File/49039443590.pdf
    • https://miraclechuppahs.com/userfiles/file/40122218852.pdf
    • http://warehousetraining.ie/images/kutizigunipubegefaxub.pdf
    • https://zweefvlieg.net/userfiles/file/98629726756.pdf
    • http://briztravel.com/upload/files/lavepulatabupofomeralim.pdf
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613e1ee040888---25103470035.pdf
    • http://houselandia.ru/files/5078659299.pdf
    • https://clicksnepal.grnca.org/img/files/files/kigefagomepuxanazoxinov.pdf
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/erb2ioir38p1tt0ma9tjn9klql/38894916433.pdf
    • http://thuduchouse.vn/pics/file/74354461091.pdf
    • http://starroadchina.com/userfiles/file/duzizemudenewukizozojagaz.pdf
    • http://agmapure.com/upload/files/sakaromagijelepi.pdf
    • https://www.burnat-provins.ch/ck/ckfinder/userfiles/files/13675209716.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/3pe8bkecf0o6j5gk9rm48p5685/91922701419.pdf
    • http://idevicesplus.nl/app/webroot/files/userfiles/files/likikumumoxoj.pdf
    • https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/jereziz.pdf
    • http://culbertsonlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/35725471808.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=redfinger+cloud+phone+download
    • 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_off0000e5b3.bin
10ede41521165a9143bf6c38c25134f2652963038d9871e638e32696d85cbbfb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B3 18296 bytes
font_01_sfnt_off00011515.bin
48ba38b4e8c7a7b0cc608c9f4d3397ee5e2fbd73e364885ec2e50828f2b70efc
pdf-font-stream PDF embedded font (sfnt) at offset 0x11515 10864 bytes
font_02_sfnt_off00012dee.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DEE 16792 bytes