Malicious PDF — malware analysis report

Static analysis result for SHA-256 573faf901be5d3bb…

MALICIOUS

PDF

62.7 KB Created: 2020-10-26 02:07:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-20
MD5: 9ba8f775dcd1a978f2f33a384460b9b2 SHA-1: 91534ebf9851bbdc746f66c92c211ae58fce66a2 SHA-256: 573faf901be5d3bb279aa06866c2a73b7b6eb36beead4b6117b597235e64579b
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.me/pify?keyword=data+gathering+techniques+pdf In PDF document text
    • https://leputixoted.weebly.com/uploads/1/3/2/6/132683438/b83e0d080ab5b8c.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/sujasemoserurotedu.pdfIn PDF document text
    • https://nobozufale.weebly.com/uploads/1/3/4/3/134322784/9404532.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/dizitufo_simoxefojis_zufogemumapuxe.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/5648329.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/2697285.pdfIn PDF document text
    • https://vaxeratomox.weebly.com/uploads/1/3/4/3/134397216/1a07ce80426fb.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/xotuxumivefitumu.pdfIn PDF document text
    • https://rizenorugeworo.weebly.com/uploads/1/3/4/3/134379336/legufozusesa.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/sezigopaf-pedugumewesur.pdfIn PDF document text
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/4096502.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/f1dfc27.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/5757701.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/1/0481/4084/5219/files/schumacher_vs_otc_700a_battery_charger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/kontakte_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9875/9078/files/13030447946.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/prefix_and_suffix_worksheets_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/99031632087.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/84958561447.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/dovatopezomep.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/66216221045.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/53126636075.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/54607772981.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/english_grammar_for_class_2.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_off0000b6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B4 5512 bytes
SHA-256: 55dc7ad03e5de848a9ac9fdcf64e830b9a7f23d6c0b60b74b599278bd457bdc4
font_01_sfnt_off0000c965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC965 10488 bytes
SHA-256: 23f18870f890c96b7df61e41c8b79ab8b8a4a0d3d1467046246db7aba90f6f33

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