Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0aacc082bdd274e…

MALICIOUS

PDF

72.3 KB Created: 2021-09-27 09:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 62eb35cfd872ab93b3260a58f2e5b515 SHA-1: 98131dd9e927e411846ce62d9f98049a0207ff5d SHA-256: a0aacc082bdd274ede403fccaf5d0a9e37788d4c83d034544fd76cf6572ec7dd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by a ML classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm. The presence of 'live football streaming download apk' in a URL parameter further supports a lure-based attack pattern, likely aimed at distributing malware or phishing for credentials. No scripts were extracted, but the overall structure and URL analysis point to a malicious downloader or phishing document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://worshipedia.mobi/sites/default/files/file/59376867320.pdf
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161378c5bedefc---beleziximemaxupibu.pdf
    • http://baggiez.net/userfiles/file/32194503731.pdf
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16150e36411e8f---12834282048.pdf
    • http://navigator-nsk.ru/userfiles/file/50940284312.pdf
    • http://salkim.com/userfiles/file/gipuziruvipuluvolefapof.pdf
    • https://uroci-kursove.com/userfiles/file/lomudoki.pdf
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614064c6b12d1---gotumuzamowotoxapes.pdf
    • https://aprenda-atdi.com/uploads/files/topewapepinirugifaj.pdf
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/161335ff30836b---11179840599.pdf
    • http://diadiemvui.com/upload/files/bupikogaletuguwazanonit.pdf
    • https://bizimpin.com/calisma2/files/uploads/xotapumuv.pdf
    • https://saikekanglun.com/filespath/files/20210907180306.pdf
    • http://topmebli.com/content/xuploadimages/file/kipotowadopaxu.pdf
    • http://lauraestetica.com/userfiles/files/tegetogix.pdf
    • http://bafiti.com/sklep/userfiles/file/maraluwavodamemori.pdf
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16151368058053---moxajekuniwaxigemo.pdf
    • https://guptajimarriagebureau.com/userfiles/file/45572357214.pdf
    • http://elitaliaweb.it/upload/file/wosuwafixiwidoluxija.pdf
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/pdn9jv0bvg13bjspsjn1jklmaj/vidititagoxifa.pdf
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/mhhscusch1gv143q95r6e201l0/bodutafefuzekevesodanez.pdf
    • http://www.sas.edu.mn/ckfinder/userfiles/files/fiwozifepazone.pdf
    • http://baltyk.recykling-rejs.pl/imgturysta/files/68169125430.pdf
    • http://sanfrancescovet.com/userfiles/files/72942425628.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=live+football+streaming+download+apk
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b67c.bin
0d5a905b23dcc0bacec347306b9d2371d3752ca1e0b9dc43bfde8d081e9590c7
pdf-font-stream PDF embedded font (sfnt) at offset 0xB67C 16888 bytes
font_01_sfnt_off0000e133.bin
02c29796f59ce3ebdb918d206ab6985033a28e8527e45d0e05ca3849fdade27a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE133 11180 bytes
font_02_sfnt_off0000fb00.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB00 16792 bytes