Malicious PDF — malware analysis report

Static analysis result for SHA-256 562f80eb5cf206ef…

MALICIOUS

PDF

82.7 KB Created: 2021-09-08 00:05:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 87012f4d2a8beb1ea5a73acb3bf0df9c SHA-1: c2cc6e8f7e1e040a56bc9238968480d083b8ccc2 SHA-256: 562f80eb5cf206ef7acbe7b0a89576e4938170af750737c7f023b4e8bb847edc
156 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 high likelihood of malicious intent. The document contains a link farm pointing to compromised WordPress upload directories, suggesting an attempt to distribute or host malicious files. The presence of external URIs and the nature of the link farm indicate a phishing or malware distribution vector, likely delivered via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3f43db9b4---zuguxagexirapoxidimidid.pdf In PDF document text
    • http://artechq8.com/beta/uploads/files/kolotuwuzotuvovowufugelox.pdfIn PDF document text
    • http://ivankotov.ru/img/lib/file/gogikurexewofodinujar.pdfIn PDF document text
    • http://etoprosto.ru/ckfinder/userfiles/files/tonudukiwojewisiweto.pdfIn PDF document text
    • https://pieseautocomenzi.ro/userfiles/file/93746229797.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/98435306575.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/59b1ce4140f01e2340d3da89a730b43b/dunuf.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//fixetipobewixebabopesizav.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a39ed0bcc3d---10506356053.pdfIn PDF document text
    • https://hostessima.pl/userfiles/file/44599007458.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084396a72b2f---38334393823.pdfIn PDF document text
    • https://fisheaglesafaris.net/pics/user/file/18107312018.pdfIn PDF document text
    • http://joy05.com/_UploadFile/Images/file/fotodulewuwiliwekora.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/5608a4598443c345e641aa54be066f1f/zenawufadewunuwirojejerol.pdfIn PDF document text
    • https://foodsafebox.com/ckfinder/userfiles/files/rufofib.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/ef649fec49f5dbc27d9e47dbdc4a2a91/70105199558.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610bedb1e1971---dutati.pdfIn PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cece3c139e---34844593395.pdfIn PDF document text
    • https://verandapattaya.com/userfiles/files/mofelareturufikibowez.pdfIn PDF document text
    • https://atpl.aero/ckfinder/userfiles/files/47112200085.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2efab40ec1---buwipodo.pdfIn PDF document text
    • https://biovuspharma.net/userfiles/files/lojeruze.pdfIn PDF document text
    • https://pk-kuepfer.ch/ckfinder/userfiles/files/28805717339.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=race+face+next+sl+crankset+manualPDF 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_off0000dd75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD75 10624 bytes
SHA-256: 446ba2bbe3adbb873a0ee6f7358a8fb0f775b61af1d0497b55c49a0571b2f40f
font_01_sfnt_off0000f5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D0 18324 bytes
SHA-256: 0801281675e040cb6793aa4a04cf2216b4f5287cbc9b7901321e185e8b8eb1aa
font_02_sfnt_off0001252d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1252D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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