Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c24b53ec4992d1d…

MALICIOUS

PDF

48.9 KB Created: 2020-10-27 11:53:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 3ad2a786f15d993a71d8ec9140aca76a SHA-1: 92ccded7b1ae91798ef0a534cf005752d34d8039 SHA-256: 7c24b53ec4992d1de45916ec34cb4a321780c68f0808d3bec225492b6bfe1787
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.club/pify?keyword=safety+management+plan+construction In PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/9324891.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/faxenute.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/majoratumapifen.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007196.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007196.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a7de.bin)
    • https://uploads.strikinglycdn.com/files/43748d30-4726-42e6-97b6-28ab3aa1b78f/butopipineduz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65b5116d-e7b6-410d-833a-35472a89356d/harry_potter_movies_in_hindi_full_hd_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e053dfa4-0df3-4a4a-92f5-9b0010d1d3a4/82861530459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed891268-728b-4597-a577-d98518a29fc6/xinobusisumidaditebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9577e4d1-ba39-4677-b36b-57045ebbfa45/83219372418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/solving_multi_step_equations_kuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6950/0309/files/13392418615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1225/7952/files/vojokalajagijifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/h_p_lovecraft_stories.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/nanirebetuzadil.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/tekejipatelabejurogodiw.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/66866457875.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/kolobalomug.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/venazixowejumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90ae1d2e-d3c6-41d9-a8a1-ac8ce229f8d6/the_grain_brain_whole_life_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c7a648c-0d38-40c3-bbbc-9f1a7eb0198b/87929096425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aca893d-e051-46fb-9fab-af3596ff55cc/nuvikexujufak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0377/1542/files/42_hitchhikers_guide_to_the_galaxy_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5738/8440/files/84908252476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/5344/6835/files/vulnerability_assessment_tools.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6845/9670/files/59933384698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8353/9644/files/zamafesejutagijewodagenan.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 extracted file (font_00_sfnt_off00007196.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7196 5420 bytes
SHA-256: 0ec7c60d3184a6e7d01859110f7f17cf44c369593e8e74a4cf9cebf1b284eef7
font_01_sfnt_off000083f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F2 10556 bytes
SHA-256: 8450f98f03874f6629cd1bc6f243d088c4e616605f5742df073bf9f33c17fa0a
font_02_sfnt_off0000a7de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361