Malicious PDF — malware analysis report

Static analysis result for SHA-256 13c1f958ee97b37c…

MALICIOUS

PDF

44.4 KB Created: 2020-10-26 15:42:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 7191e8e4b7ca8284840815a5f9040662 SHA-1: c0ff48021d31e1958759a09b3774aa7b7b09c82c SHA-256: 13c1f958ee97b37c07c1c3c0a1702d93e86f0e2dd887457920871dfa7e7f0dd3
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains a link to a known malicious redirector, ggraff.ru, which is disguised as an administrative guide. The ML classifier strongly indicates maliciousness. The embedded link likely leads to a phishing page or a malware download, attempting to exploit the user's trust in official-looking documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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.
  • 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://ggtraff.ru/pify?keyword=symantec+endpoint+protection+15+admin+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4392667/normal_5f8fcad52612b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409394/normal_5f962c6d9106e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374540/normal_5f904f14d0ee6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_5f920d60581aa.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/1/0431/0876/1751/files/driving_school_2020_apkmonk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2394/8183/files/powomajagivuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/dolphin_android_paper_mario.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/bojiwapobe.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/poesias_fernando_pessoa.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/22373688897.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/gipazoxajalukowabaki.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/advertorial_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7c1fef5-a248-4b87-8029-41d9cfc42fe4/2573947056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da13d4ac-b59c-404c-acc2-30a968acf964/suzed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d71fbca3-5f7d-4f67-9f0a-decb7411a80f/sherwood_fundamentals_of_human_physi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ad8200-db2a-465e-8be6-4ae29e72d699/56188426051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be759a30-2281-4c1e-a384-fcf05eb1063a/zaxinobumejudomu.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AD 5564 bytes
SHA-256: 20a0a6a41d9edd40d12f984cdf7440fbfd7c8133391e82fc6fe40441ee94d81a