Malicious PDF — malware analysis report

Static analysis result for SHA-256 379d30fa6662f87e…

MALICIOUS

PDF

69.0 KB Created: 2021-02-19 15:29:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0077532560334965d458e89f2e74d18b SHA-1: a1561aff8cc2af066e704fb4b3d54ae4fb81e255 SHA-256: 379d30fa6662f87e7d3ef3545bbc0d9328c127ab41f8eb30b8b27609805eac31
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://maypoin.ru/wix?keyword=hey+monster+mod+apk+unlimited+diamonds PDF link annotation
    • https://buderenedisam.weebly.com/uploads/1/3/5/3/135302361/kosowiwuguxibelu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408983/normal_601e02752c1de.pdfIn PDF document text
    • https://cdn.sqhk.co/jesuzedavoti/EQ2ghgo/buck_hill_racing_team.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/hfGhdid/ballet_barre_exercises_at_home.pdfIn PDF document text
    • https://pabebubi.weebly.com/uploads/1/3/2/6/132695301/30325f8c1c5368.pdfIn PDF document text
    • https://fitelibisubun.weebly.com/uploads/1/3/3/9/133987071/0983debcc3bc.pdfIn PDF document text
    • https://vubufogos.weebly.com/uploads/1/3/4/7/134766152/575915f3.pdfIn PDF document text
    • https://cdn.sqhk.co/womilepeba/sZgeLY7/stream_alerts_sounds.pdfIn PDF document text
    • https://wumezovavupod.weebly.com/uploads/1/3/4/7/134741594/1cf955c45da25f.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/tigovatolis/8_ball_pool_guideline_tool_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/corao_cigano_negritude_junior.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/jinja2_template_designer.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/38705089404.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/sesapo.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_off0000d11e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11E 5232 bytes
SHA-256: 287eee510fba04057be76b7d3be5d279aad9bec6053ce89aec36ab1558ad5f64
font_01_sfnt_off0000e2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D9 10656 bytes
SHA-256: 2a3b0cf1cdfa38be2238895a7e6a740913c625b1a6dc064238e30ef8190b2c40