Malicious PDF — malware analysis report

Static analysis result for SHA-256 09b015a8398ee778…

MALICIOUS

PDF

85.3 KB Created: 2021-09-11 13:57:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8651f8c471fb40ba5e81fc73de8c003d SHA-1: 96a6b06a41de152bc90ede74d10ec3ad9699a1aa SHA-256: 09b015a8398ee778b7b95ab845fae37665cbb76c8a18572cbcbbeeb2bb76a5b3
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised websites, suggesting an attempt to trick users into downloading malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with known phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://abcoegypt.com/userfiles/files/27775871004.pdf
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/4688f941738c062d392ee6b5a7715925/tisodifurilukuveroguroge.pdf
    • http://scantech3d.com/files/muluxuzefe.pdf
    • https://gitedu.in/ckfinder/userfiles/files/vifozanomogufapusujaxapib.pdf
    • http://aotwresort.info/ckfinder/userfiles/files/17603677936.pdf
    • https://sunridgecorp.com/uploads/files/202109101843156861.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/0a01b3242b45a57796b27d649bdbb0cd/78173171693.pdf
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132cc4a1db53---sejifusamepeponanujumul.pdf
    • https://amatnieks.com/pictures/image/jomiduwurez.pdf
    • https://newtech-utm.pl/userfiles/file/ranevajutanegigirivu.pdf
    • https://ph2020.org/ckfinder/userfiles/files/8149642144.pdf
    • https://esperanzadeavila.com/fotos/file/50693983593.pdf
    • http://home-hj.com/up_photo/file/veguvolifadowe.pdf
    • https://franchisefarm.franchiseharbor.com/files/files/35612762385.pdf
    • http://macautemple.com/userfiles/file/33055226659.pdf
    • https://dacola.com/upload/files/54605020554.pdf
    • http://topliving.sk/userfiles/file/webot.pdf
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16136bd9020a2f---zozagipafavura.pdf
    • http://5percent-design-action.com/upload/users/files/werileniju.pdf
    • https://www.idd.no/ckfinder/userfiles/files/55414971125.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16134401c69c6e---40421260965.pdf
    • https://faceless.me/userfiles/files/68960451404.pdf
    • http://adimhukuk.com/resimler/files/velujebizogidusatewivawo.pdf
    • http://absolutelyneon.com/userfiles/file/lewivigigulim.pdf
    • http://iseveranscopy.com/upload/editor/file/20396761784.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=mela+full+movie+download+720p+bluray
    • 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_off0000e871.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE871 16792 bytes
font_01_sfnt_off00010088.bin
091c70b30cf734574bc4401d4db3680cd48055a048c0dc51a836987f961474ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x10088 11184 bytes
font_02_sfnt_off00011a86.bin
7edd18aa589f8170a6ea05d14e687ad2088b9f3162f833e817deb5c0bce6cb22
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A86 17256 bytes