Malicious PDF — malware analysis report

Static analysis result for SHA-256 309d56269af40c68…

MALICIOUS

PDF

49.7 KB Created: 2020-08-22 13:00:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93f882b6bf3d41409ada508152275ea2 SHA-1: 1a631f4756a4d29f8e29bef10a51c1c89a45fab1 SHA-256: 309d56269af40c686d3ec1373a9835f0f5cae939ea9ec017ff5bda331f66474a
194 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to a redirector service. The primary redirector URL is https://ttraff.cc/pify?keyword=maplestory+reboot+ark+training+guide, which is known to lead to malicious infrastructure. This indicates the document is designed to lure users to malicious sites through a link farm, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=maplestory+reboot+ark+training+guide In PDF document text
    • http://files.handwritingconsultants.com/uploads/1/3/0/7/130739081/tevudekudap.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/1/0434/0839/2353/files/miracle_shake_ed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5409/4743/files/vuxopeveku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1694/4807/files/danger_chamar_2_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3085/1233/files/anambra_basin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/nenaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3932/4325/files/incidencia_prevalencia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8955/8680/files/5399883376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/nda_maths_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5592/1822/files/relationship_attachment_style_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2083/7018/files/goal_setting_worksheet_middle_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/bubakefelixufijiboxa.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 1

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_off00007536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7536 5440 bytes
SHA-256: b23f3d80fb523686fd5f357cfd10b4a795c24c9a8471579ef26c6f72f8e2f52d
font_01_sfnt_off000087cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87CD 16364 bytes
SHA-256: ced25e9a22c9225efbeba766cab6454be175fed4120a4f5a46b64b2d6a23bc87

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