Malicious PDF — malware analysis report

Static analysis result for SHA-256 3568178f295f5550…

MALICIOUS

PDF

92.1 KB Created: 2021-06-27 05:54:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ae64e1406bbede823b5418910f3b31d2 SHA-1: c4c220c2330fa3563ba6e24af2c5497c553306ee SHA-256: 3568178f295f5550b341067a9121539eafb9a004d1880a7196e2b67f67205684
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links pointing to compromised WordPress upload directories and other potentially malicious sites, suggesting a link farm designed to redirect users. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, indicating a tactic to leverage compromised infrastructure for distribution. No scripts were extracted, but the overall structure and URL findings point to a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://birnagarcollege.in/userfiles/file/68133374169.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089c7bc7674b---90022221971.pdf
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/3b9a9180d87807fe160e371dd8bd0e2c/91594583018.pdf
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7bc9def8890e099e612033148c39d8b2/zusenedovovigama.pdf
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1607dadea1b5c5---meram.pdf
    • http://przedszkolenisko.pl/userfiles/file/woveketesumogekesu.pdf
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608186b074d20---wanijiv.pdf
    • http://abnicum.com/files/file/38714152021.pdf
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b3c056d3683---3706739437.pdf
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b98def8783b---7717930191.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a9bd346d038---zofeluzixo.pdf
    • https://aronabritcan.com/userfiles/file/merifevijakugakanazijo.pdf
    • http://gdaniec.com/upload/files/99642482758.pdf
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160ab0bba1e954---rosonik.pdf
    • https://embassyinvietnam.com/webroot/img/files/68049956165.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160715fba005fb---nupusewazuwifuxut.pdf
    • http://coeb.eu/userfiles/files/67633380828.pdf
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf9d87a279---xetajitosuwoxuwole.pdf
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/efvf94isj344a1oa31f02c6050/poduxisilarawuz.pdf
    • https://makiriaszto.hu/ckfinder/userfiles/files/gupasawujetu.pdf
    • http://allycatering.com/userfiles/xalutesunemamajimetusaw.pdf
    • http://ligneus.hu/upload/file/demutebolaviworigizesedu.pdf
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/8f968c36ce09242dea33ef5ac83da16b/fufij.pdf
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f2f1039a4dbc12e403a57f1471006f0f/20014824643.pdf
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160ba6ba79505e---zanukikiku.pdf
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/2c9d3ae628a053c7335a1c094b756721/dotovokogarazotav.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=pyrantel+pamoate+oral+suspension+for+dogs
    • 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_off0000fe60.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE60 16792 bytes
font_01_sfnt_off00011677.bin
4d1f865854ad6750b340d0559d4f16dc65e77bae4f7ad7399daf1949d1ca0b4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11677 11056 bytes
font_02_sfnt_off00013002.bin
dabe410f8f80990bd4d6947a829933a41043c13da30fcc163df17f9873fbb516		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13002 19056 bytes

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