Malicious PDF — malware analysis report

Static analysis result for SHA-256 233315f607b25a71…

MALICIOUS

PDF

34.7 KB Created: 2020-11-01 06:03:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c29b36e3ecb8f83dcc7225762e0e2610 SHA-1: 4954b8971cbb3c6b38e6c38e3f280e04409387eb SHA-256: 233315f607b25a71a57af678dd31ec91835419ef244550dbdb78d62766ebfdb2
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure related to a 'Kitchenaid kfxs25ryms4 owners manual' but redirects to a known malicious redirector infrastructure. It also contains a link farm of 14 PDF links, suggesting an attempt to manipulate search engine results for phishing or malware distribution. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • 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.
  • 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/aws?keyword=kitchenaid+kfxs25ryms4+owners+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413707/normal_5f982ed035b9a.pdfIn PDF document text
    • https://tikedamo.weebly.com/uploads/1/3/1/4/131453682/1820268.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wilugugo/holistic_nursing_care.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5abf8c1-bff3-48d4-afbe-ab95e393a11d/ps4_lag_switch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f84ad07a-5340-483f-b8af-1fe7bc728115/smart_bracelet_manual_em_portugues.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1e1bffd-46df-4a91-ba4a-d4d8f159be09/59407777892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cdd9a3c-d2f2-489f-8e57-03a47197d75d/44662392369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f8d45be-8f04-44e1-a9db-96468fe9c02a/warejagijuterirata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffa01ae6-266a-4846-adbb-b830adeca050/lepamoxenatewawuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29988e73-e9ce-4f49-8223-9a22dcc9b0d2/poxilugine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa60f4e4-aa64-4dd0-8036-a6d4e01fa2c4/yds_stratejileri_irem_yayC4B1ncC4B1lC4B1k.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/lijudulekizubunuramipel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75182d13-aefb-4e34-a6e4-93058737b7af/vofinojipotalat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23a87ae4-d11f-4427-92c7-8ef2ab54cc76/38602646200.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_off00006482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6482 5900 bytes
SHA-256: aa129bb6da1cd0af40f01548ff40fb0ab50dbcd610ec0ef7fc0c38c4e1c1bcfc

Open this report in the interactive analyzer, or submit your own file for analysis.