Malicious PDF — malware analysis report

Static analysis result for SHA-256 8509a642a613cec9…

MALICIOUS

PDF

71.2 KB Created: 2021-09-21 09:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: a696952eff38b0aab691ba96af2883c2 SHA-1: 472c7050fd254802ae8ebebf72d21275751e8cbb SHA-256: 8509a642a613cec99363a675d79b8677253e927cd517637d55876adbbd54acf0
176 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and appear to be part of a link farm designed to distribute malicious content. The presence of a FIFA mobile mod APK lure suggests a phishing or social engineering attempt to trick users into downloading further malware. ClamAV and ML classifiers also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://pistant.ru/uplcv?utm_term=fifa+mobile+mod+apk+unlimited+money+latest+version+free+download PDF link annotation
    • http://rainternacional.com/userfiles/file/22383525832.pdfIn PDF document text
    • https://skywaynepal.com/userfiles/file/vizabenofone.pdfIn PDF document text
    • http://0985028898.kad.tw/kads/ckfinder/userfiles/files/59372828051.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee47e2341c---27464278561.pdfIn PDF document text
    • https://angelsolutions.ro/ckeditor/ckfinder/userfiles/files/57841543379.pdfIn PDF document text
    • http://uekekb.ru/!upload/files/74730945639.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137f1eb16653---11293947703.pdfIn PDF document text
    • http://goodlife88.com/uploads/files/70244050674.pdfIn PDF document text
    • https://capecoralliving.com/media/file/37699052459.pdfIn PDF document text
    • https://sanvexe.vn/webroot/img/files/31046716181.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16141d56f09230---75701518282.pdfPDF link annotation
    • http://talk200.com/admin/admin/uploadfiles/file/82929773970.pdfIn PDF document text
    • https://felicitareonline.ro/ckfinder/userfiles/files/24767658604.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161392eb0bfe75---72084945766.pdfIn PDF document text
    • http://gestaocipa.com/public_html/Imagens/file/25837083888.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/mevofawarebabigojej.pdfIn PDF document text
    • http://hk-sai.com/ckfinder/userfiles/files/nonupoju.pdfIn PDF document text
    • http://mynotary.ca/sites/all/sites/mynotary.ca/files/85686643626.pdfIn PDF document text
    • https://tarsiman.ee/files/file/xenig.pdfIn PDF document text
    • http://alwaysshine.com/fileimage/file/nimupisoxagereriwan.pdfIn PDF document text
    • https://instalacje-elektryczne.net/ckfinder/userfiles/files/sonud.pdfIn PDF document text
    • http://jeanchapleau.com/userfiles/file/10158043448.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_off0000b469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB469 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cc7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC7B 15800 bytes
SHA-256: 43a15e92f547bebfd596508817f5eba8ac0b95aa7487a98c99ec19e7c783c903
font_02_sfnt_off0000f4d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D5 11236 bytes
SHA-256: 173671a530910e807184a609ec4931d6ee3218e808a19cc59e5bb8e94492f6ae

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