Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01b3444e4009fb6…

MALICIOUS

PDF

69.8 KB Created: 2020-10-27 19:41:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-19
MD5: 340cc3a4c184b2d83ecfc5724bed8bff SHA-1: 9f4530d4f4a10ec8d0e08236c7fa69c959772867 SHA-256: b01b3444e4009fb6050a4e19f0d07e1b7444ef9c008e987ec9fdd5bb2416f9b5
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.me/123?keyword=oak+point+elementary+school+marion+va In PDF document text
    • https://nozagovedenide.weebly.com/uploads/1/3/2/6/132682533/xosigukodidug_nidibezor_nonukesi.pdfIn PDF document text
    • https://lasajiboz.weebly.com/uploads/1/3/1/3/131379041/652692af.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/gawoxixagixeb.pdfIn PDF document text
    • https://lafapimiwegu.weebly.com/uploads/1/3/4/0/134041150/lugelurozuzemikedubi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5f8c28a3def8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383302/normal_5f8c829bc9160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368481/normal_5f9003b598c8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0490/0795/2039/files/row_row_row_your_boat_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2909/8396/files/38162753793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9254/4162/files/tokimizajubupinegiliwosi.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/49909360613.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/25738617898.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/pdf_to_word_converter_offline_free_download_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/bpmn_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/dupowiduvilisuxufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aab2421-193e-4794-81db-6f89622d1c89/66135647711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00a6ac88-594e-4b39-b51b-8e60df12df17/bmw_e90_manual_transmission_oil_capa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85192821-cb34-4c6f-9084-da0eff051763/pojomesazebujux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ec2a837-663f-4496-bf9b-04fcfb10bf5c/48242816462.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_off0000d0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E9 5424 bytes
SHA-256: ff39cc8b55d3c7e1c7c017aa065fe22404de8ed6985f119c49cd9fde2b609079
font_01_sfnt_off0000e33c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE33C 11440 bytes
SHA-256: 0bac1c50e88e486469320bb29c9096e54fa0c0c1175e0aa6615eb7d12b5e3d44