Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5af3d042132856b…

MALICIOUS

PDF

50.9 KB Created: 2020-10-28 21:50:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: ab7af75b7ed931b4153f27a9a9cc9bfd SHA-1: 9d6ffc76635d9bb78228788871e103016e4d0051 SHA-256: d5af3d042132856baf1d60f15bb0ec8745ff9b7bfcc965e850b881f30d322b61
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.link/pify?keyword=galatians+5+commentary+blue+letter+bible In PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/robumatazudavij.pdfIn PDF document text
    • https://wulonuvesiga.weebly.com/uploads/1/3/4/3/134362584/3bdad49d2ae35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f874f476356e.pdfIn PDF document text
    • https://wozijasobinela.weebly.com/uploads/1/3/4/4/134445001/jetixow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377928/normal_5f93d5182a72d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368969/normal_5f9373c62013a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f91608530df8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_5f9893983b5d6.pdfIn PDF document text
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/zupelamuf-juvoteremer-wazabovomuwumed.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/serogajugomiji/55054963937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0807/2104/files/migugus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0388/5737/files/55649647285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/progress_bar_in_fragment_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9970/9333/files/stirling_childrens_well_being_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2120/5145/files/class_not_registered_looking_for_object_with_clsid.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/fofasomibopanipefo.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/525312966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2257/1930/files/nizarivefud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8947/0643/files/89996417313.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/xupapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/awesome_cheap_android_phones.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/angeles_y_demonios_libro_online.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/18488543948.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_off00008679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8679 5340 bytes
SHA-256: 045ef200c220f15d3e4e3aa1b4da40603995dcd8a07db5f7a67707957f2fdb24
font_01_sfnt_off0000989a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x989A 11092 bytes
SHA-256: cb317fd7f35d4f56d44afed4c60f19d5d5d62aa526260ad6df85d2f682b82494