Malicious PDF — malware analysis report

Static analysis result for SHA-256 562a3ca8fdba3067…

MALICIOUS

PDF

84.2 KB Created: 2021-09-02 17:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: e654c6a76377e3e87600fff5f27e6ba5 SHA-1: 3ac6e97c711316bc95dc971061bb66cf1a15e261 SHA-256: 562a3ca8fdba3067a57b13f970692b6ec21f77d3b2ca16925d499f38583a3623
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous external links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://allytemp.ru/uplcv?utm_term=flames+of+war+great+war+pdf PDF link annotation
    • http://billagelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/59034067700.pdfIn PDF document text
    • http://letresorellebio.it/userfiles/files/vekexiveli.pdfIn PDF document text
    • http://ags-sib.ru/ckfinder/userfiles/files/78487841624.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3945b698c---30810199706.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160dad7f602f32---vuzivuliguk.pdfIn PDF document text
    • http://flairpens.ru/uploads/file/51543905483.pdfIn PDF document text
    • http://oio.cn/uploadfiles/files/91322907984.pdfIn PDF document text
    • http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/68845400992.pdfIn PDF document text
    • http://rurisnet.org/images/file/luxatajuzufilipimuwivexa.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/zelojatemosu.pdfIn PDF document text
    • http://tscyw.net/userfiles/file/20210704161729_0goid3.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/p6vjqrridkabj1j7ngfqd18dr1/sipuxemovevi.pdfIn PDF document text
    • http://xn--hy1bt45apoap01a.net/jangheung/userfiles/file/74356569221.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160af775ef40e8---70620895445.pdfIn PDF document text
    • http://meubelenindex.nl/images/uploads/bejanudun.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b39c61042c4---19645692742.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/0b4e5466eb09f1c26c7899b43e7bbafa/wijedixujedur.pdfIn PDF document text
    • https://saintarseny.ca/sites/saintarseny.ca/files/file/noxagunigozor.pdfIn PDF document text
    • http://master-sign.ru/ckfinder/userfiles/files/xotomofizugogonivigirenas.pdfIn PDF document text
    • https://ncsccalgary.com/userfiles/files/tupibefovuf.pdfIn PDF document text
    • http://nct-vn.com/userfiles/file/sibagufixeko.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/0t6ieja60kf672p3dtam7jugh4/16156243057.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/da85af8c0bede8f8ff300a05f4f59a08/41286838239.pdfIn PDF document text
    • http://ensky-chemical.com/upload/files/4901309003.pdfIn PDF document text
    • https://apotekatia.ba/fajlovi/4859212754.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/95b0c4306855627a8b4e95d22f295609/jarijof.pdfIn PDF document text
    • 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_off0000e133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE133 18952 bytes
SHA-256: b49474d501ad8c5ad07febc51062433cf16c93107b7f61db6b34478a5e91be8c
font_01_sfnt_off00011287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11287 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9E 10708 bytes
SHA-256: 95cec0b3149c8624c821ee1e8450eda0f09c8ab53ae9b3df4d1ccae2c41de7ad

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