Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e8357c5cce243a…

MALICIOUS

PDF

56.6 KB Created: 2018-06-11 09:55:15 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 113fbd7ce6c01de7a7d4b0229b8133ba SHA-1: 5d4c50c0467c6a595cba4001da1681cc30603c68 SHA-256: 84e8357c5cce243af72614d7fd0dbf1b686a0af659c4a355f6aea645b71697f2
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a visual download button and links to a PHP gateway, suggesting a lure to download a file. One of the embedded links uses a raw IP address, which is a common tactic for malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing or spamming attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.1058

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF carries a PHP-gateway SEO-spam PDF link farm medium PDF_SEO_PHP_GATEWAY_LINK_FARM
    PDF contains four or more clickable links whose target is a `.php` gateway with a multi-word search-PHRASE document slug embedded after it (e.g. 'index.php?.../binary+options+trading+nz.pdf' or 'pdf.php/cialis-dosage-side-effects.pdf'). Legitimate PHP-served documents use a filename or numeric id, not a search-query phrase, so this is the generated SEO link-farm shape — pharma / binary-options / 'free download' spam that ranks for queries and routes users into payload/redirect chains. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://uncpbisdegree.com/download3.php?q=silent-in-the-grave-parish-richards-book-12.pdf In PDF document text
    • http://uncpbisdegree.com/download4.php?q=silent-in-the-grave-parish-richards-book-12.pdfIn PDF document text
    • http://159.65.139.158/file-pdf/silent-in-the-grave-parish-richards-book-12.pdfPDF link annotation
    • http://www.nfkchem.com/download/doc/silent-in-the-grave-parish-richards-book-12.pdfIn PDF document text
    • http://sushanta.com.np/silent-in-the-grave-parish-richards-book-12.pdfIn PDF document text
    • http://urlaut.de/silent/in/silent_in_the_grave_parish_richards_book_12.pdfIn PDF document text
    • http://onepager.solutions/silent/in/silent_in_the_grave_parish_richards_book_12.pdfIn PDF document text
    • http://uncpbisdegree.com/1/structural-design-a-practical-guide-for-architects.pdfIn PDF document text
    • http://uncpbisdegree.com/1/selection-test-a-critical-reading-the-tragedy-of-macbeth.pdfIn PDF document text
    • http://uncpbisdegree.com/1/the-fifth-book-of-peace.pdfIn PDF document text
    • http://riverside-resort.net/1/welcoming-the-word-in-year-b-sowing-the-seed.pdfIn PDF document text
    • http://uncpbisdegree.com/1/teaching-3rd-grade-math-answer-key.pdfIn PDF document text
    • http://uncpbisdegree.com/1/sony-a37-manual-focus.pdfIn PDF document text
    • http://uncpbisdegree.com/1/signpost-grade-9-book.pdfIn PDF document text
    • http://uncpbisdegree.com/1/sony-svf14215cxb-laptops-owners-manual.pdfIn PDF document text
    • http://riverside-resort.net/1/wrx-engine-diagram.pdfIn PDF document text
    • http://uncpbisdegree.com/1/test-disk-user-guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://www.amazon.com/Silent-Grave-Parish-Richards-Book-ebook/dp/B00J1R6VY2In PDF document text
    • https://www.amazon.com/Thrillers-Mystery-Books/b?ie=UTF8&node=10484In PDF document text
    • https://www.amazon.com/Silent-Grave-Parish-Richards-Book-ebook/product-reviews/B00J1R6VY2In PDF document text
    • https://www.goodreads.com/book/show/21517963-silent-in-the-graveIn PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617350In PDF document text
    • http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409In PDF document text
    • https://go.microsoft.com/fwlink/?linkid=868922In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617297In PDF document text
    • https://www.amazon.com/Silent-Grave-Parish-Richards-Book-ebook/In PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

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_off000092d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D0 14004 bytes
SHA-256: be6c2332cc82e3eeca3acd8f6c4361e985a8347da0381eb80f579e2dcda3d4b9
font_01_sfnt_off0000be07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE07 8620 bytes
SHA-256: 45cb4eac3b4754006f07c2f8b65a9acf292b8e9b1e0c8fc51df9b885e589b48a

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