Malicious PDF — malware analysis report

Static analysis result for SHA-256 343f222245b6138c…

MALICIOUS

PDF

83.8 KB Created: 2021-06-26 23:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 76b60f07841c0ff9bb38cab4162a7672 SHA-1: a47214b2e5ef5728c196c4ec62b0120c05464aff SHA-256: 343f222245b6138c0ec367037f352b94afa938e558eb58c83e45c69f27fdf4ca
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, containing language related to prizes and courier deliveries. Multiple heuristics, including ML classification and ClamAV detection, confirm its malicious nature. The document contains a link farm pointing to various compromised WordPress upload directories and disposable hosting, suggesting an attempt to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://babamoleskine.com/files/file/lidekozobazuzurewafav.pdf
    • http://phuocthuan.vn/images/pic/file/vudopoladogojuj.pdf
    • http://rialta.ie/userfiles/files/20474679553.pdf
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a477c6419e0---13001468755.pdf
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a75dd25b72d---zafiguxupaxopeto.pdf
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a444ea45d5d---82616597425.pdf
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/5shqs0e6q01sahij6p0hir6fhi/zunevomapotegoxizapo.pdf
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/68b6ea73a91f1af91c2303220dfdab36/nikumidi.pdf
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/n65i6fd7qit2itskset9a282s7/60447406502.pdf
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f403ce6da9---rizinunowevosobasegor.pdf
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/7db682f2fe57579d01c60d99719d3397/vegevavop.pdf
    • http://davidlbrooks.com/clients/868292/File/ginovox.pdf
    • http://arci-mp.fr/admin/File/libunobab.pdf
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1609b14f83d560---83864919701.pdf
    • https://aonetreks.com/uploads/file/buvekotonapufaxek.pdf
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/441f24f146491a67a352219a4c690c00/9713020043.pdf
    • http://biosite.ru/images/news/file/96279064111.pdf
    • http://gemculture.com/userfiles/file/medotenimu.pdf
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/abeae72abd7995cbb7da5ee44fe4cc3b/zulizuferobatowarevapedu.pdf
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a87ac32c1d0---17706235140.pdf
    • http://amdind.com/userfiles/file/73972353740.pdf
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/df730e8eee9d4ae3ce57867ae6a9ab3e/20311698690.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=difference+in+title+and+deed
    • 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_off0000e89c.bin
6a6647685d3d9e2997b41c5adebb10ee90b374ee59e880f2aa413a0e6c467255
pdf-font-stream PDF embedded font (sfnt) at offset 0xE89C 16628 bytes
font_01_sfnt_off00011358.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11358 16792 bytes
font_02_sfnt_off00012b6f.bin
71f00dc53a419e2e160106b5c2e31c12e08f868f5e3305945cd1bd825e97c81c
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B6F 10180 bytes