Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a38fa870dd5bb24…

MALICIOUS

PDF

50.6 KB Created: 2020-11-28 09:38:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b957f98d6a09eeefc79ccfc70efcf03d SHA-1: 59a9c5e14499fe5c52e16a25d8764baa4689c202 SHA-256: 7a38fa870dd5bb249178d5903f02480c5aa936680cc39f201a390670b4535280
132 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link that redirects to a known malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. This link is presented as a lure for 'free download' content, suggesting a phishing or scam attempt. The ML classifier also flagged the PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7328

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://traffking.ru/aws?utm_term=hd+camera+apps++for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4414689/normal_5f9f3c032a3c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452372/normal_5fa8ece4ed032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81db68f5-8564-40aa-9b16-32e71ad79cdf/everstart_plus_battery_charger_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/889202de-b4a3-4944-8957-07d15563c083/medidas_antropometricas_del_recien_nacido.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/wuvejulexudegob.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/shatta_wale_borjo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb7b0c99-2c51-428f-aa39-446a9c1e7ff2/neogeo_rom_pack_retropie.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/44049421238.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/75579871656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98356a4d-5d20-4cb4-a900-262cd75ff9d0/2112276057.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/hpu_shimla_admit_card_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/830c43e4-7d09-4be6-9154-51be3fa444b3/rotmg_price_guide_utility.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/11356562956.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/return_man_zombies.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/sigofodugarexenovu.pdfIn PDF document text

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