Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c57e74b31e49de…

MALICIOUS

PDF

69.1 KB Created: 2020-08-15 02:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19351be8d908f38e82c5a9b4e867e765 SHA-1: e0bfc87864b6de1393babc07266e425193436b25 SHA-256: d0c57e74b31e49de9bec3aab41f3de31d1127e67493a901667b5c3faa897db28
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=d%2526+d+5e+fighter+level+guide', redirects to known malicious infrastructure, indicating a potential phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=d%2526+d+5e+fighter+level+guide In PDF document text
    • http://golotulik.morrinsvillecountrymusic.com/uploads/1/3/2/8/132814930/xekezika-vokubiz.pdfIn PDF document text
    • http://files.maplebrookschool.org/uploads/1/3/0/9/130969529/6446797.pdfIn PDF document text
    • http://dunojikex.kathleenokeeffe.com/uploads/1/3/1/6/131637814/wulepekinovarabapop.pdfIn PDF document text
    • http://files.deshlerchamber.org/uploads/1/3/1/4/131438869/fedudumobagume.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/1/0428/9835/8432/files/dedijadexurusefux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/78250697887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3088/9126/files/30502051628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/52805940245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9966/8121/files/vedusajujuvilamelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2830/8387/files/35865998651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/84297207580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jotinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3233/6792/files/arduino_bluetooth_module_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77650869017.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C60 6596 bytes
SHA-256: dea69edc3617924ddd2ea7a2dad42168437cc0f9b5f05654bc8089d7be019e3d
font_01_sfnt_off00007ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA4 3148 bytes
SHA-256: b72324bf9fb2f960ad531a0c7fe13c100795e1c8b461db9e4f4d6c8496002b7d
font_02_sfnt_off000087e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E3 4156 bytes
SHA-256: d205a490ce0ef3b0e7eb7c8b3402073d1e4a99c72674db49f9e1e12afddcc9d5
font_03_sfnt_off000095d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95D0 6224 bytes
SHA-256: 9f47aa96527d7b55db2a44687777893b4fcb5954852002f82c140ab43f2d3994
font_04_sfnt_off0000a4f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F7 20864 bytes
SHA-256: 7b213cbf4b44e8c79d943aeba00e448faf4c1d3a595747e81720774f170b94d0
font_05_sfnt_off0000e13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13A 16304 bytes
SHA-256: 8f84ecd7f75584380f617f581aa08df766b27c320f4bc8b0aab0b4efe21da0ad
font_06_sfnt_off0000f6fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FC 6096 bytes
SHA-256: ba170bb474b40190d9812ea6fa89a7109fc11a1f35ae9fc602080c752cac96c2

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