Malicious PDF — malware analysis report

Static analysis result for SHA-256 073a4995e145504c…

MALICIOUS

PDF

45.7 KB Created: 2020-08-07 15:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3f2e473d56e2ed1c99b0697707fdf3d SHA-1: 1656cecfa3f7afc05258e0707f69ab84fb24531a SHA-256: 073a4995e145504c04ad6dde250d500de1da31358339311da76db9442a77c68c
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links and a document body that directs users to a redirector URL, masquerading as educational content. This infrastructure is associated with malicious activity, likely aiming to deliver a secondary payload or phish for credentials. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirection attempt.

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.ru/pify?keyword=mathematics+in+the+modern+world+lessons+pdf In PDF document text
    • http://files.themovementdancestudio.net/uploads/1/3/1/3/131380558/7249882.pdfIn PDF document text
    • http://files.goughsrangeolives.com/uploads/1/3/1/8/131857970/mexesin_nefef.pdfIn PDF document text
    • http://files.craftedcasesnc.com/uploads/1/3/1/4/131453252/78ef3c11ab1da7.pdfIn PDF document text
    • http://files.ninebotours.com/uploads/1/3/1/8/131856012/tulusema-xadewu-revog.pdfIn PDF document text
    • http://files.harvestofsongs.com/uploads/1/3/1/4/131483391/tofulanobuviza-tibarazeka-sovotez-xuraxiduvunis.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0432/4504/3876/files/fimenesarudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2589/9421/files/xanopusexigusavilakiritox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/wezibonizazarujikarujig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/98203224086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4528/2214/files/befugotekakajigok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/sbi_bank_po_preparation_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/94617468625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3539/3180/files/kerugekobujisorexipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/99894233390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/56241741129.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD1 1604 bytes
SHA-256: a90f79d35b855d6e419c922e1c16a7f20c875ed03b3e5f8d6d8c2638309ac592
font_01_sfnt_off000074f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F4 5492 bytes
SHA-256: 83d44bab7b5d71f0f9dd3a6d774a93267d7d989f13895cf0e70e605c2f3b0b51
font_02_sfnt_off00008795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8795 9960 bytes
SHA-256: 053e4bc0a4e5806a49e6fb7688d6acfaf7b88236929a9dd28c2f96309853ad3c

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