Malicious PDF — malware analysis report

Static analysis result for SHA-256 177775b001c72db6…

MALICIOUS

PDF

44.8 KB Created: 2020-10-28 03:07:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ac43a116322541469ffe1ca08a7f0ed1 SHA-1: 26c3e70ecdbeb1d487dfd6449647b11eff6200fa SHA-256: 177775b001c72db69e3ffce1fbbee1155847bcc8cfa59dbc9aec3d71af8dccaf
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://cctraff.ru/pify?keyword=writing+word+equations+chemistry+worksheet+answers In PDF document text
    • https://gejovekozeja.weebly.com/uploads/1/3/4/4/134401956/9edbf028.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/natubanewa.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/sofivutijomivar.pdfIn PDF document text
    • https://funovupudejo.weebly.com/uploads/1/3/4/4/134473131/6330231.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006d5a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006d5a.bin)
    • https://s3.amazonaws.com/xanebavifamopez/gudevemorolag.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/tipos_de_planos_arquitectonicos.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/32135176639.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/tufitukufonegebasixuv.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/entrepreneurship_grade_9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0461d442-130e-4499-a020-4feb5ff1a5ef/11160941530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d154cc9d-7ea2-418d-9e37-c96bfec36a36/8677439858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a06f43d-ae2a-4f30-abf9-e1dca3425e4a/47301507970.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3ca059-d30f-4a35-9587-bede9b2b0f86/xtrememac_tango_trx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b54571d-b9b9-4109-a15a-7371ad7decd2/soledad_high_school_transcript.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a6cbb0d-e644-49ae-b88b-9cbfb6fdfc4d/builder_for_minecraft_pro_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4387/9594/files/classical_fake_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7348/2133/files/lucy_mary_lindsay-hogg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5867/1015/files/zijiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4499/2666/files/41511319940.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 extracted file (font_00_sfnt_off00006d5a.bin)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5A 5720 bytes
SHA-256: c7d526ae99b53c2ed38099346126ef45cd7ef5f6a63bc1bc5e74745866feea83
font_01_sfnt_off000080b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B7 10712 bytes
SHA-256: b1d9aa1277022dc28244de6247c5aa76b486e1f292829e641ce958f2792391f6

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