Malicious PDF — malware analysis report

Static analysis result for SHA-256 2becbcbabd8ac6a5…

MALICIOUS

PDF

89.1 KB Created: 2021-09-01 10:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 330318c1a2f7615f4260f7b15c753e73 SHA-1: a8c49df2ef67f4708282314b06742b10b26e3253 SHA-256: 2becbcbabd8ac6a5372e548b8bf8feb6980f7f25d1deb5412a675ba6c5765aca
164 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The heuristic 'SE_URGENCY_LURE' indicates the document may contain urgency-related text, further supporting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://pixomot.ru/uplcv?utm_term=geographic+trivia+questions+answers PDF link annotation
    • http://citescolairedeledit.com/include/file/vunanevob.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/4648163515e01885ca02ee93b02426ef/40812071112.pdfIn PDF document text
    • https://www.spitalmoldovanoua.ro/ckfinder/userfiles/files/jokavi.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/lenenodalofileranagabaw.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bad9bca48db---95630877995.pdfIn PDF document text
    • https://amadesafar.ir/basefile/amadesafarir/files/xirapimed.pdfIn PDF document text
    • http://ck-buhgalter.ru/userfiles/file/41509099994.pdfIn PDF document text
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/pomizixavonuko.pdfIn PDF document text
    • http://mid-europe-ex.com/images/blog//file/bemabuwelopusanupalotawez.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160712371b1fc3---26037919750.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/ag7nqjh5k8sbollhj106ah0pgo/tanetediwemuropu.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/rokedukewor.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/tedimadofikepat.pdfIn PDF document text
    • http://buren-kompanie.de/userfiles/files/18534642080.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607440584ef6a---julabumemub.pdfIn PDF document text
    • http://dastone.ru/userfiles/file/77350913664.pdfIn PDF document text
    • http://purofirstli.net/userfiles/file/64877847705.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/b8134db361ceda467229f0b934390a68/5313646089.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073a6a9ce7ba---vazipibosulunalo.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d186656b915---38801509526.pdfIn PDF document text
    • http://posekatzahradu.cz/files/file/vokujesukojizuxogeduj.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9c34d8350---numidosukugonexigu.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/dosinivutajezokeka.pdfIn PDF document text
    • https://onwater.my/uploads/file/godesevetolus.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_off0000f5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010e03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E03 18176 bytes
SHA-256: 4adcf25be4c4f996bea46c46d34ca8ecf04e19c11884a2c35a7a5891009d34c4
font_02_sfnt_off00013d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D16 11044 bytes
SHA-256: 7130f9be9937cca6e9e8c0a4ae983c14a04c9cf92301c52b446cc38bb1127962

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