Malicious PDF — malware analysis report

Static analysis result for SHA-256 a27b1d57b55d4c17…

MALICIOUS

PDF

43.6 KB Created: 2020-08-17 04:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2116e9bdff1fd947707246c7b30bea1 SHA-1: 5409987262fcd9aea466e6bee50b7607de169583 SHA-256: a27b1d57b55d4c17b24411edf434f3d0c237e3a3b1700af579dcae1063c68edb
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded link directs to a URL associated with known malicious redirector infrastructure. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

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.com/pify?keyword=calendar+template+2019+starting+monday In PDF document text
    • http://files.selahchurch.com/uploads/1/3/0/9/130969507/mazomefo.pdfIn PDF document text
    • http://files.aretemediaacademy.com/uploads/1/3/0/7/130775361/c561187bb877bfc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sesolofulazige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9432/7974/files/fapubovusotuwavezos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7480/4126/files/wilizajosaxodezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/18244167510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4339/5483/files/6th_grade_physical_science_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2224/4264/files/xovewer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4048/0155/files/digitazutotox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6835/0873/files/70015538644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6921/7699/files/le_cercle_de_la_forme_chatillon_planning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/78457282039.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 5

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_off00005dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFF 5672 bytes
SHA-256: 63d3b178ce4408a8da655b1dde67a8b9952759976a5fcdb072beda31141e1991
font_01_sfnt_off00007138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7138 10052 bytes
SHA-256: e1fcadd2333b800ca57d5a841357a2f0dd367773e2f6fdd8246c209009eb0ab5
font_02_sfnt_off0000936f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x936F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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