Malicious PDF — malware analysis report

Static analysis result for SHA-256 4812ba83ee3a8684…

MALICIOUS

PDF

16.0 KB Created: 2020-10-28 09:12:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c21c48b6b7ef96ac9d1e984858ce5a7f SHA-1: c33118715a51eb3df3ed6dc987ff3a4463819e8b SHA-256: 4812ba83ee3a8684a65c292ef217e6dad4c1e0f964b9a808ebc3c301c393f2d2
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as malicious due to its structure, which uses an image lure to trick users into clicking a link. The embedded URL, https://ggtraff.ru/strik?keyword=hall+county+public+schools+jobs, is a known malicious redirector, indicating the file's purpose is to lead users to a potentially harmful site. The ML classifier strongly supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 16 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/strik?keyword=hall+county+public+schools+jobs
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/putosebebi-vometetusu-xawaneka.pdf
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/pemuvavekenurikamik.pdf
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/sewebezeput.pdf
    • https://cdn-cms.f-static.net/uploads/4386837/normal_5f8cf28340338.pdf
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f88c62aeffd6.pdf
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5f8d4d1e3e709.pdf
    • https://cdn-cms.f-static.net/uploads/4376600/normal_5f937e0e71cfd.pdf
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5f91a5dea1764.pdf
    • https://cdn.shopify.com/s/files/1/0483/5940/7765/files/73755299440.pdf
    • https://cdn.shopify.com/s/files/1/0496/1838/7107/files/24239872278.pdf
    • https://s3.amazonaws.com/xuzed/ncert_chemistry_book_download_class_11.pdf
    • https://s3.amazonaws.com/gulapore/catalan_chess_opening.pdf
    • https://s3.amazonaws.com/sugaguxagu/lipodaronetej.pdf
    • https://s3.amazonaws.com/tetazino/causes_of_fetal_distress.pdf
    • https://s3.amazonaws.com/somamere/32976344484.pdf
    • https://uploads.strikinglycdn.com/files/f59ec87e-f690-4267-b725-19671c489689/tuwumulagot.pdf
    • https://uploads.strikinglycdn.com/files/7cf8c68c-5789-48e3-8b3b-7f0c89f96c27/93551931281.pdf
    • https://uploads.strikinglycdn.com/files/e1faaade-f908-42c6-9ef2-1fbbad1d8cbb/38220141747.pdf
    • https://uploads.strikinglycdn.com/files/a50676e5-7418-44a3-bd3a-713305c8ffc0/fubovajejuwunomuraverigis.pdf
    • https://uploads.strikinglycdn.com/files/25aefd01-c722-4b83-a318-05b633070e56/interstellar_full_movie_online_hotstar.pdf
    • https://cdn.shopify.com/s/files/1/0496/4987/7143/files/13088253870.pdf
    • https://cdn.shopify.com/s/files/1/0480/5269/9300/files/runonuithread_in_non_activity_class_android.pdf
    • https://cdn.shopify.com/s/files/1/0467/9955/2663/files/14778504982.pdf
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/92495996750.pdf

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