Malicious PDF — malware analysis report

Static analysis result for SHA-256 d21904dcd3d8207a…

MALICIOUS

PDF

50.7 KB Created: 2020-08-13 22:29:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48ab87b6fb8c3dd8c9be7c0dd955dcf8 SHA-1: 3f8222546a47d2e4994fd5ebdece3c0009492272 SHA-256: d21904dcd3d8207a8565b67dd08cbd40bcaebded9bd96c738b211f1c61a6e305
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a prominent link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to 'Video er app for jio phone' and the malicious URL itself, suggesting a lure for users to download potentially harmful content. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which point to Shopify domains hosting PDF files, likely as part of a link farm to improve search engine ranking for malicious content. The SE_QR_LURE heuristic suggests a QR code might have been present, further indicating a phishing or social engineering 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=video+er+app+for+jio+phone In PDF document text
    • http://files.daradrar.com/uploads/1/3/1/3/131379246/6311640c6f30.pdfIn PDF document text
    • http://files.shaluksgardensolutions.com/uploads/1/3/0/8/130814042/netudexutu.pdfIn PDF document text
    • http://zejisoza.wstprop.com/uploads/1/3/0/8/130874493/menovozasapu-refax-luvef-watulefa.pdfIn PDF document text
    • http://files.thundercounseling.org/uploads/1/3/0/7/130775249/1486454.pdfIn PDF document text
    • http://files.dipconcaribbean.com/uploads/1/3/0/8/130814411/xulov-lekinosa-betaberijumi.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/1/0437/8951/6962/files/yield_management_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1613/1484/files/18665981522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6448/2202/files/kekalotizutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5053/9940/files/revista_de_tecnologia_informatica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/43345920412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3662/2498/files/forofimusoluma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2323/5232/files/pozexuzuxizuxalaxowopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1497/9737/files/72128668599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/26993664843.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_off000060d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D6 12164 bytes
SHA-256: 26ce35e434b6721f75bf2ea0bc8d85064d6efc86d826db251bb9d1ae10649d39
font_01_sfnt_off00008888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 4960 bytes
SHA-256: 496606d7f22d08ae409ae78ff8f35ae855556341952330fa0014f35314570d76
font_02_sfnt_off0000996a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x996A 10700 bytes
SHA-256: 174a8811bb9af482c8b9581081857a9a80b9e82bc7787a63374b41777ba2e591

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