Malicious PDF — malware analysis report

Static analysis result for SHA-256 90c3d8ef9467b48b…

MALICIOUS

PDF

40.0 KB Created: 2020-08-21 22:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2cb62fb57bf000efcf2849953a622d53 SHA-1: ee5fce6456d8f8d4e2c4372e9c38669452068cce SHA-256: 90c3d8ef9467b48bf1765ca556ba409c990d6a273309c364d454f77180edc65d
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a malicious redirector link disguised as a "proxy switcher chrome" download, which is a common social engineering lure to trick users into installing unwanted software or visiting malicious sites. The document also hosts a large number of external PDF links, likely for SEO manipulation or to distribute further payloads. No scripts were extracted, but the presence of a malicious redirector and the social engineering lure strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=proxy+switcher+chrome In PDF document text
    • http://files.ordernutsabouttella.com/uploads/1/3/1/3/131398235/21ecfebe6.pdfIn PDF document text
    • http://files.ajeplanners.com/uploads/1/3/1/4/131406816/sifojopese_nidukuzinagimo_xutokajofuzi_roxurugar.pdfIn PDF document text
    • http://files.sabrina-rose.com/uploads/1/3/1/4/131438282/fadoke_vemowatonemuv.pdfIn PDF document text
    • http://files.thelegocasestudy.com/uploads/1/3/0/8/130814630/5956506.pdfIn PDF document text
    • http://files.regilvillagehall.com/uploads/1/3/0/8/130874113/51a25c99a.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/1/0437/0841/6165/files/the_blue_planet_3rd_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7019/2802/files/prada_song_mp4_tinyjuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4350/3783/files/xaxuxesejidiluluvisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3167/4535/files/icici_cheque_book_request_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/hong_kong_tourist_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7470/6853/files/57477426525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/best_kali_linux_tools_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/pexiwuremi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FED 5060 bytes
SHA-256: f357b489c079016f2e48907e28f61bd7ee1f5650532e7cb79b1987b444215e57
font_01_sfnt_off00007119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7119 10100 bytes
SHA-256: 2f836780f37ff9720fed64e371b8c6e32ff6718ecc23eff5e53651d61cf0efbe

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