Malicious PDF — malware analysis report

Static analysis result for SHA-256 95237cd3e922e11f…

MALICIOUS

PDF

94.9 KB Created: 2021-05-28 23:29:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a76add54c761f876320478e418e28d51 SHA-1: ad5237eb219cb0a64b84cbc080e27a9e7077db4c SHA-256: 95237cd3e922e11f3f6955542a3d5c92abdd3c235d3b0ab7d918c5fd92776077
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. The document body contains text related to "Barbie movies 2018 free", likely a lure to attract users. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. No scripts were extracted, but the presence of numerous external links indicates a potential for redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://zajinet.ru/123?utm_term=barbie+movies+2018+free PDF link annotation
    • https://delutezebojuk.weebly.com/uploads/1/3/4/3/134353455/niwuwaziperolom_luvegubaver_nivupomolas_tewolamifojeko.pdfIn PDF document text
    • https://fuxomiluzixoxam.weebly.com/uploads/1/3/4/5/134594746/4673135.pdfIn PDF document text
    • https://kinuguno.weebly.com/uploads/1/3/1/4/131454024/831523.pdfIn PDF document text
    • https://gepidoduxaw.weebly.com/uploads/1/3/5/3/135324144/rivudoromuda-givujijo-kavalepixufunu-gotesaroz.pdfIn PDF document text
    • https://juxetume.weebly.com/uploads/1/3/4/8/134879156/bududovidevijop_xixufoxobejutes.pdfIn PDF document text
    • https://suponililodu.weebly.com/uploads/1/3/4/3/134322256/tadosigora-sagalaxufo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495696/normal_6028c5b1d197b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383131/normal_5fe173b2cb591.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404964/normal_60063a1fe4040.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_60664caecda90.pdfIn PDF document text
    • https://rodifeganugupi.weebly.com/uploads/1/3/2/8/132815003/zilise.pdfIn PDF document text
    • https://datuzela.weebly.com/uploads/1/3/4/1/134109276/27dffadd11626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/a770c925-17c1-44f1-a8f6-337d14c38625/32272548107.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf386467-654f-4548-a15a-44fabbbf65c5/why_does_my_samsung_washer_keep_saying_suds.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF9 5200 bytes
SHA-256: 710244eeee9e0fd0bdc8f26824e619e77fc6de208ff1bfbe99ee8abf2260b5a4
font_01_sfnt_off0000fee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE3 5648 bytes
SHA-256: d95aafdf6b41913c6c8b4b1c29e752a539330f274f9d5dbd5d32ad370a6f5ee7
font_02_sfnt_off0001120a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1120A 15580 bytes
SHA-256: d22d22505f6959888dbe224d88941c0ea88bd007a9567ff63a866fc6c4f45169
font_03_sfnt_off0001432e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1432E 17788 bytes
SHA-256: 29f7930d422db37fb4fc50711acbd4627c161324462628674d7846b726735c8b
font_04_sfnt_off00015e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E74 3992 bytes
SHA-256: 189b0824265da3c78e3a90d8ac7e90c496d84ff4a702058ba774bd0669682054