Malicious PDF — malware analysis report

Static analysis result for SHA-256 db179486edb0c7b5…

MALICIOUS

PDF

45.1 KB Created: 2020-08-25 21:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 9a2e1209d2fb276b84afa71b4db691db SHA-1: b096b7113566db639f25cdf08b0d67a0e92bb8a5 SHA-256: db179486edb0c7b5770c2278b82b8cd6b74b4c27c042c138f5adcfa9da364b47
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.ru/pify?keyword=christ+college+finchley+uniform+shop In PDF document text
    • http://files.marryingbipolar.com/uploads/1/3/2/3/132302960/zibetul.pdfIn PDF document text
    • http://kotiseb.centerstudiovt.com/uploads/1/3/1/4/131453133/f3e49fb8ec1f32.pdfIn PDF document text
    • http://makuzere.austlinq.com/uploads/1/3/0/7/130740596/daguz_fagadeboli.pdfIn PDF document text
    • http://viloduf.ucfilter.com/uploads/1/3/1/4/131482975/eddcba2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7223/3380/files/foxuwubonubiboxola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/kasuwipupavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4914/7803/files/dexipikogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1520/9123/files/rukejenewaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/0276/5985/files/go_math_7th_grade_advanced_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3826/8827/files/rubuzopisurobediruki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7076/7512/files/sopikovubew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3531/1775/files/foxatejolibuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8030/9141/files/cinderella_3_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/27456557775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/xeretapenobobope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/biology_sylvia_mader_12th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8292/4441/files/wokovoxed.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D9 5224 bytes
SHA-256: 94d695b3bc56cedb4884f39d3788ab8a68222301c41392acb6e8457bcf9eed61
font_01_sfnt_off00007684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7684 10144 bytes
SHA-256: 2afa4053b67b3f923c9daa1b67e53cf3d38c6c4d6edd1f7121d77af2e6c03d56
font_02_sfnt_off00009934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9934 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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