Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ee883a7e48e34a…

MALICIOUS

PDF

91.6 KB Created: 2021-10-05 02:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: d5e295f1c03566df1ac5d5d3b9fe007d SHA-1: 1364d8180c3d33b62f375bae295c0a58f505bb29 SHA-256: 89ee883a7e48e34aaf040d490605575710e5a24c8820a779023831e2430c409a
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to websites hosted on compromised CMS platforms or utilize disposable hosting, indicative of a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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.
  • 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://odlingfamily.com/userfiles/file/46321693074.pdf In PDF document text
    • http://tradeweb.es/userfiles/file/24028072783.pdfIn PDF document text
    • https://www.hosotte.com/ckfinder/userfiles/files/58259491109.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/33db832bcc6ebf8158c4d7e151cc6b9e/90210623634.pdfIn PDF document text
    • http://enjoyisagenix.com/ckfinder/userfiles/files/bujekubibesowalileb.pdfIn PDF document text
    • https://whatproperty.ng/ckfinder/userfiles/files/rosozisi.pdfIn PDF document text
    • https://greenbins.ca/ckfinder/userfiles/files/69662809049.pdfIn PDF document text
    • http://splogservice.ru/content/files/93460702114.pdfIn PDF document text
    • http://kimdaiphatsteel.com/Images_upload/files/60131088311.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/2d3a761312736b3cce7d4647cc847ee7/62221333381.pdfIn PDF document text
    • http://huile-de-nigelle.info/userfiles/file/pejimanemedi.pdfIn PDF document text
    • https://dom4m.de/userfiles/files/teteva.pdfIn PDF document text
    • https://bike-accessories.supersites.gr/content/ckfinder/files/famadelugenapebovir.pdfIn PDF document text
    • http://4yoga.by/pics/files/38252284903.pdfIn PDF document text
    • https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/tezejekajak.pdfIn PDF document text
    • http://headlinesdinerla.com/uploads/files/56512860383.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147b937636d8---52606721295.pdfIn PDF document text
    • http://demenagements-remond.fr/userfiles/file/20210923020010.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/49686297004.pdfIn PDF document text
    • https://callmarkinvestments.com/callmark/files/58096909581.pdfIn PDF document text
    • https://swift-tw.com/lcc/upload/files/kifilitajixofen.pdfIn PDF document text
    • http://kochamsushi.pl/UserFiles/file/naregixewanipaxe.pdfIn PDF document text
    • http://madinagirls.com/easydo%20v2.00/files/uploads/51262484813.pdfIn PDF document text
    • http://chatyzvule.cz/uploads/pebanajizasol.pdfIn PDF document text
    • https://hantverkarenisandby.se/UserFiles/files/jelasadoxugu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=what+do+plants+and+animals+need+to+livePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD54 19712 bytes
SHA-256: d05d3244da8ff8284db70ae2e3a08125996b0468a9491dd4746db80327838318
font_01_sfnt_off00013057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13057 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001486e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1486E 10616 bytes
SHA-256: 570569c1dcc0d8cb7e8aff400ae4ece3303bf66211e4861a0334b677d13a48fe

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