Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc3c72e5d7bcd68…

MALICIOUS

PDF

38.9 KB Created: 2020-11-09 12:52:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: fee8405ca23a921dbdaabdebdacd5de4 SHA-1: 9534baabea59097e25ae586f8d2cfc85be2c6145 SHA-256: 0bc3c72e5d7bcd6844a5aa9cb2e92d0414750f503bc0f265ea5e61ef72416a96
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=plantronics+cs500+headset+manual PDF link annotation
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/pijurilixekax.pdfIn PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/2562645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420036/normal_5f9e8f1eb98b2.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/japufarolamefezaki.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/wujidomepedig-ninepewomopeba-sewirukal-ramitidafanug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/31ea79bc-9c30-4fbf-a45c-23b5a776de43/51656081106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/473cd41a-e35c-4286-9db2-2d7ac4ffdc61/naxeletuvuxugexakajizaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/873c69a8-f304-4515-b60d-f006e3c30dc4/wopozabapemerasuka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1655677f-eeee-43a7-998f-2f795c403208/xujunonugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da70c1bb-9de1-41b5-ad06-5b14f4f5e0b2/fasodafuwog.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF1 5448 bytes
SHA-256: e608d1b4f3d034e33ebf616bbbf23e95459ee281cf72ccb82cfc593cacfa4397
font_01_sfnt_off00006d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D49 9816 bytes
SHA-256: 78cf7f66d77d70242410c1466c13c168b62fa6bd1d4d49fd9e894b745239dea7