Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c0dfee8279b5c9…

MALICIOUS

PDF

46.8 KB Created: 2020-10-23 07:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 2c1fdf34e200de02be73e4fe61f2449b SHA-1: 73f02215d2dcdef0a9dd14f25afd83a39dee8d1b SHA-256: 57c0dfee8279b5c99d99957ec2ca0e3ef33880df0098a8341c002643c2f79969
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.cc/pify?keyword=pax+sara+pennypacker+pdf+espa%25C3%25B1ol In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5f8a8a19cbda6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_5f90ae839728e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_5f90e5f62e130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393209/normal_5f8e46034c27b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368489/normal_5f8b60e7cf445.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383566/normal_5f8dd8c623c0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5f89fcf8d5912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5f8985daccd22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f88c6590890d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f87114205f35.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/6f6bb8d0-d7f6-48bc-8406-68fbdbf44dc5/40941864888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe077f71-d4d3-444f-89e6-443aee2e098f/73196700174.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/746ce432-afea-4a5f-a400-9896ec7e4bb3/85123281266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de5fb25b-ca26-4330-b61c-0d1322344e1d/zilaporatigub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e784232-445f-4e38-853c-c904e3fa0ea6/rorasavobuxezizebowaledex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a3e7267-75a5-4980-883a-ce693ebf4b8a/gatafabuvaludizivalon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/061b24f4-6757-4126-946a-8d06638bd000/19512875342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0508ee81-f6cc-4479-92f1-d5b1049111a4/parf_guide_system_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/726a5c4e-4d71-4c2a-88af-f33342e66e6f/internet_download_manager_full_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/368b09ff-68e9-414c-b259-09619f104d56/puguteguwerojujopebometu.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_off00007204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7204 5596 bytes
SHA-256: 07e4a046260ea631875563d46cdfe2e455aea5babbb962ccf5049278cb9c3c35
font_01_sfnt_off000084e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E7 11712 bytes
SHA-256: d085e9d336eb065d97204dfe26068d651882d51c0c8c8715739f53d631dc0e6a

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