Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e58349ddec9d1d5…

MALICIOUS

PDF

95.8 KB Created: 2021-07-02 04:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cd644bcc271455a70c92da6dd8be933a SHA-1: 7b01193af7262bd23822312aaee11a9b045a1af9 SHA-256: 8e58349ddec9d1d5c4ef095af0684881a45d6b83e4288ed62fbeea27f29f1d4b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms, suggesting a link farm or redirection mechanism. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security and deliver malware. No scripts were extracted, but the overall structure and heuristics point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9786

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://infrive.ru/uplcv?utm_term=windows+loader+extreme+edition
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606c83363a2ee---rumomuxonevigopa.pdf
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/86d67db0b9cf9257963768b721d384bc/sepemanuvunaj.pdf
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/431398a087822dc3915f989ccac2848b/23439021638.pdf
    • https://zold-kommando.hu/files/sexamowekilig.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779e474567b---fudiwanebo.pdf
    • http://skrabl.pl/www/rpbd/fck/file/mobozubamifozilaloxupe.pdf
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a43a7e31af---dalabuvidajimemul.pdf
    • https://albawadiroad.com/userfiles/files/mibivolupezazawade.pdf
    • http://candybeauty.vn/upload/files/82151306381.pdf
    • http://kennycojewelry.com/userfiles/files/202106/1623747610.pdf
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160851358ca450---67558951836.pdf
    • https://cleanenergy.mn/uploads/files/92250637256.pdf
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16090c8473ad3d---9150590991.pdf
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076634044bbc---99551577515.pdf
    • http://makesrealsense.com/ckfinder/userfiles/files/65019475099.pdf
    • https://anjingliar2.com/contents//files/jisikugukamejudej.pdf
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160768929798ec---kojipituteporoxixufakufix.pdf
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b7f08ea4f4---sikowixi.pdf
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/9l1o4u4q66n2g4qbd596iv93he/modamilafo.pdf
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/a81a52a6bf7a0257d0a194595eed4575/7025466210.pdf
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/kivhmief55i3d3d5dadae859gj/23098695667.pdf
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec0599a174---nafoxipupukifajax.pdf
    • https://southernlightingsource.com/wp-content/plugins/super-forms/uploads/php/files/39633aadcf4eeea87bb829c053255370/jigezepekikuxufij.pdf
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160760d0510305---tebakuzulox.pdf
    • https://alamansyria.com/userfiles/file/luxibokugawazefupevese.pdf
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086a4e46719c---ledomagajutarebutevaz.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f267.bin
6b7562f735c74dd86d785f4f14f24e2f844f421abf09e24c27d20e44d071ae3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF267 10592 bytes
font_01_sfnt_off00010a9b.bin
27fa49ca30b1f57c6e4f8b99ad1f73ead7010ce1f191e20d716503af09158f46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A9B 16160 bytes
font_02_sfnt_off00012010.bin
24ca968c15ff6e2e814c9e879c3bba2ffb3da55347def541a4fe5d0c85310c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12010 25908 bytes
font_03_sfnt_off000157d5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x157D5 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.