Malicious PDF — malware analysis report

Static analysis result for SHA-256 394baba0e709bc79…

MALICIOUS

PDF

42.8 KB Created: 2020-08-04 03:17:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f50d9814056b1440fd5bd47bd6b9241 SHA-1: 996ba82c791b7675698434c972d95d28496350fe SHA-256: 394baba0e709bc7908b93c213652669620c84c3038acaeecb2ede0cd9372335e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains text that appears to be a lure for 'basic english grammar pdf in bangla'. The embedded URL leads to a redirector that is likely used to serve further malicious content or phishing pages.

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.cc/pify?keyword=basic+english+grammar+pdf+in+bangla In PDF document text
    • http://files.texasyellowroseguesthouse.com/uploads/1/3/0/7/130776326/2182491.pdfIn PDF document text
    • http://files.halfmoonday.com/uploads/1/3/1/1/131164281/9268406.pdfIn PDF document text
    • http://files.olivetteinbloom.org/uploads/1/3/0/8/130873708/8fef9a769c.pdfIn PDF document text
    • http://files.moniquemariegelineau.com/uploads/1/3/1/4/131453268/tinafovefosela_zasusofesabi.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/1/0433/6910/3528/files/55995431250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/dulunuzolaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4809/0270/files/vitulerezagufomotab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2873/3352/files/cake_recipes_with_pictures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2654/4802/files/gadupitep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/saxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1908/3677/files/63569118395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6519/files/95966301661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/27376156478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/rogozazojiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/konusakidisadud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.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_off0000684e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684E 5760 bytes
SHA-256: c609b5d69a3cffb4fe6897b88a0d78cb235b3bd58cdf0c834e57e18ebd3437ad
font_01_sfnt_off00007bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB1 10032 bytes
SHA-256: de677971519adfe9fd5687673acca782cf963253c607d8d42033918b6eab8aa8

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