Malicious PDF — malware analysis report

Static analysis result for SHA-256 f65189cb12596ee8…

MALICIOUS

PDF

47.9 KB Created: 2020-08-15 00:28:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e724d82f06a7b918b689bf79b093dbc1 SHA-1: 6add60f0b91f641572345566e0d76b7ae2e71108 SHA-256: f65189cb12596ee8d3ace7e62449d2cfe80c43a533025280a917c40d4469498f
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.com/pify?keyword=ipad+pdf+markup+apple+pencil In PDF document text
    • http://files.ishkabinasphotos.com/uploads/1/3/0/7/130776401/8256b5cd4a48.pdfIn PDF document text
    • http://files.gaelicsocietytoronto.com/uploads/1/3/0/7/130775320/bidepat.pdfIn PDF document text
    • http://files.theeastwestco.com/uploads/1/3/0/7/130740069/xonijejizedaja-nadojesezagakof.pdfIn PDF document text
    • http://files.jasmineleflore.com/uploads/1/3/1/3/131380308/pibos.pdfIn PDF document text
    • http://files.senisilatcapetown.co.za/uploads/1/3/1/8/131856188/2631514.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/54104948974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6828/3294/files/85049569632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9840/7837/files/general_ability_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/fiviripogiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4094/5829/files/fatawuguzifezezetuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1687/0309/files/tabitidusujogipavolasuxug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7936/8858/files/16847484091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1297/files/zixididetulakix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/48548620726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2783/1712/files/pyramid_bloxx_java_game_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/buku_cerita_anak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/adobe_acrobat_convert_to_word_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5792/9623/files/wevufawozimokazogurebu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A5 4764 bytes
SHA-256: 6be0a745324c96220bf733313cbe9213577c0ab8bcb3aea71030d7f618ab31cc
font_01_sfnt_off00007537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7537 5124 bytes
SHA-256: 659e140a3eeb94aeddafa2687c8153b92c4165db1b1439a02ab9a123ebbf54d4
font_02_sfnt_off00008683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8683 1916 bytes
SHA-256: 266b22fd0c2c2b76ea04b43d7954242befda6681878a1abc5267c941275959f2
font_03_sfnt_off00008fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA9 10116 bytes
SHA-256: 57f90171d6f10bbbc00447460d027c2432922d8851553a9dea777451ca466a0b

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