Malicious PDF — malware analysis report

Static analysis result for SHA-256 527e4702ab4ca1ae…

MALICIOUS

PDF

39.8 KB Created: 2020-08-09 06:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e92d938c96dda9d719ed1413660cdee8 SHA-1: ae71b57b090cc087d391242a54942c17e5b36760 SHA-256: 527e4702ab4ca1ae785f2cc0e2679cc1d9b0798da1ede5580d41c6f37b51ea5d
202 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to external resources, which is indicative of a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, suggesting a deliberate attempt to lead the user to malicious content. The presence of a 'download button' lure further supports a malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=catholic+prayers+in+spanish+pdf In PDF document text
    • http://mowura.celerahhewes.com/uploads/1/3/1/1/131163590/5235736.pdfIn PDF document text
    • http://files.maaloufashford.com/uploads/1/3/1/4/131438427/3313529.pdfIn PDF document text
    • http://files.jefferykylehutchins.com/uploads/1/3/2/6/132681517/wexojobem.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/1/0436/1335/6189/files/fedex_shipment_release_authorization_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3062/files/terasuzonarajig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1175/8504/files/pioneer_sx-_6000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5534/8888/files/sabolurimov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5565/0718/files/14485327907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3996/files/bca_1st_year_books_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/an_inspector_calls_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/53759570152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/bear_awareness_ajahn_brahm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2643/1652/files/5th_grade_math_exam.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 3

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_off00005c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8D 5248 bytes
SHA-256: 8cca3a6c73c784ccde6605f23e04f9d22e0c70d01da30d37f7c3191e8285c4a6
font_01_sfnt_off00006e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E66 10632 bytes
SHA-256: f6e79ac5053aeea66970b1231ba63b04eef017f75459e2d01e6ef6b86d2162fe

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