Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5212859ab1149b…

MALICIOUS

PDF

89.8 KB Created: 2021-02-18 09:54:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 1a8316bf5676ef3f8190fcc3ab7b9d87 SHA-1: 4ed31d3bb39b2c7bf6a1917e0592ac3711c03411 SHA-256: eb5212859ab1149b398a1a91be24dd94d1bf4fa770f9c5811bd0ae7b1405b1e8
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which appear to be part of an SEO link farm designed to redirect users. The primary redirector URL is 'https://baarspo.ru/123?utm_term=apa+itu+juz+dalam+al+qur%2527an', which is indicative of a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF structure and numerous external links strongly suggest an attempt to lead the user to a malicious site, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/123?utm_term=apa+itu+juz+dalam+al+qur%2527an PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385612/normal_6026ae95e9494.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464734/normal_6005cf6562aa3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367624/normal_600817aaf0101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465938/normal_5fe25509c826f.pdfIn PDF document text
    • https://bupulaserora.weebly.com/uploads/1/3/1/4/131437689/0f6446c16e.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/2iaNheV/65089141874.pdfIn PDF document text
    • https://cdn.sqhk.co/fetadupozo/fLhdPmN/64017359483.pdfIn PDF document text
    • https://cdn.sqhk.co/fokatekox/DhhTFbO/bepawanaxu.pdfIn PDF document text
    • http://doordash.fun/talking_tom_gold_run_hack_apk_free_download7j273.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462697/normal_5fcd4fd014acc.pdfIn PDF document text
    • https://seporulakokifo.weebly.com/uploads/1/3/4/5/134590723/35dd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421768/normal_5ff2062d2b167.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuneduzib/cicjcgf/41248468859.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424666/normal_5fee7c954e404.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/nimuwet/rigulerota.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/spreadsheet_queen_meme.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA72 5204 bytes
SHA-256: ff4d95b947383a651d729231a6cc7ed452ee3cc7523c8740371cf9cf1e626e5e
font_01_sfnt_off00010c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C15 6296 bytes
SHA-256: 7c7ac0107d00c433a88004bed7e8704a2a6a1f345ac979a14099a5bc471a6a44
font_02_sfnt_off00011c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C88 10692 bytes
SHA-256: f2f37090c123c18e6acfd39502321b93b211017dde6728b8167c3bdbcb0aee97
font_03_sfnt_off00014126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14126 16932 bytes
SHA-256: 90e4b43da9ad5f78bf740c1d61a6cd503cf0c13aebd1b55afe6ed25fae153ec5

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