Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a367d23349ab070…

MALICIOUS

PDF

87.4 KB Created: 2021-06-30 06:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: c2c4672097df7d6c797982f6a461c9a4 SHA-1: 1bf72cfa8b1e5d867c15214127177f83868415aa SHA-256: 1a367d23349ab0702836109ca5036a80c5e6d99cd78fadf7a55a983aaa66829e
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous links pointing to compromised websites and disposable hosting, suggesting it's designed to redirect users to malicious content or download further payloads. The presence of a QR code lure further supports a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 8

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://smidgel.ru/uplcv?utm_term=manually+update+android PDF link annotation
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607428158c669---donavave.pdfIn PDF document text
    • http://www.emailposte.com/pictures/fosof.pdfIn PDF document text
    • https://chachachat.info/js/ckfinder/userfiles/files/94684746979.pdfIn PDF document text
    • http://alexhoffordphotography.com/temp/files/file/91794251194.pdfIn PDF document text
    • https://bawaniint.com/ckfinder/userfiles/files/novoxas.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7b61019e4---49383232618.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/16072b411043e1---nusomurebax.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/taj8sa4sg9jv5rmpq8kqnkp3fq/naparoxilawufitulemuzaju.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608596a1a367e---9874639174.pdfIn PDF document text
    • http://soepcentrale-dekeyser.be/userfiles/file/53920139206.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/ea2ac50ccbb314af8cd7b6f828e279e6/repulaxikije.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/itg2v2gjd9p3aufmia73nhvt1q/wunuwulepi.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086dc0446d04---wabebobofu.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609036e7032e4---nosiragusewanifopuj.pdfIn PDF document text
    • http://sampsonancestry.com/clients/d/d9/d9bd9208c4e45de01aa31840e3a8c66b/File/xuzunadugu.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b27d3ba2d2---wobukojiwoxemi.pdfIn PDF document text
    • https://speakingparrot.com/upload/ckfinder/files/46843261160.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/sotogolo.pdfIn PDF document text
    • http://computergramm.com/userfiles/file/babodoxikakikoseva.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/762243b06945dab58fee92eb805b8dc5/warofowazirunimo.pdfIn PDF document text
    • http://bukharaalpharetta.com/sites/default/files/file/78154083164.pdfIn PDF document text
    • https://rijst.nu/userfiles/file/9984742182.pdfIn PDF document text
    • https://mabuksusu.com/contents//files/mefigapin.pdfIn PDF document text
    • http://goteneplast.se/files/images/file/ligapinejavepizu.pdfIn PDF document text
    • https://ivanamihic.com//files/zoluludase.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_off0000f1a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000109b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B5 17416 bytes
SHA-256: 36c2737d0b95a918bac66c2bab3c5342de9785f2c74b4c6e9fa84c4b97e5fe0f
font_02_sfnt_off00013721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13721 10424 bytes
SHA-256: a9536851ebac8324e5900d370950bcaa54cf22ef40fd0ebf166004dff415b77c

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