Malicious PDF — malware analysis report

Static analysis result for SHA-256 410ccbaa2a17a28d…

MALICIOUS

PDF

81.9 KB Created: 2021-02-15 04:42:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c71503679826d59fe2ff41abd5527bf0 SHA-1: 121aab28590ca6217d2c1beb7ad031f1eb226adf SHA-256: 410ccbaa2a17a28da1042c5006249dce6254d51590feb27f8a9680941ddf9abd
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/123?utm_term=town+of+brewster+water+department PDF link annotation
    • https://cdn.sqhk.co/janawezexoj/hiheiid/leroxawer.pdfIn PDF document text
    • https://sanajupa.weebly.com/uploads/1/3/1/4/131406847/7b5eeefe23f1.pdfIn PDF document text
    • https://zawamobapuve.weebly.com/uploads/1/3/5/3/135383520/fovovat.pdfIn PDF document text
    • https://kazuvamelu.weebly.com/uploads/1/3/0/7/130738637/ed56b95.pdfIn PDF document text
    • https://gonibulurigudum.weebly.com/uploads/1/3/0/8/130874364/889eb2168.pdfIn PDF document text
    • https://gulapizebulo.weebly.com/uploads/1/3/1/0/131070336/f864daf7.pdfIn PDF document text
    • https://mawetifatine.weebly.com/uploads/1/3/2/6/132683292/00d8aba18799.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/vodalipimegovulapepepebu.pdfIn PDF document text
    • http://mikugux.rf.gd/aacomas_transcript_form.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/darn_tough_women_s_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/rozovofufute.pdfIn PDF document text
    • http://nagudakorixo.rf.gd/vosasukolaxosisorage.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/personal_budget_management.pdfIn PDF document text
    • http://vekoxoke.epizy.com/97240762056.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/38257826600.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/xegifojanasomevomokuteniv.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/jigaxa.pdfIn PDF document text
    • http://beritoka.rf.gd/37005464806.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A7 5336 bytes
SHA-256: 9e0d025d4c3db327b7f695c618386472ff9cd3cf031dde8899a8fe987a43f732
font_01_sfnt_off000112c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C4 11668 bytes
SHA-256: d880d5f65eb8e01adace09456753cdba5ee5bf01eb716ea25c39cbfceec2ecfe

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