Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e031c762f2a7af…

MALICIOUS

PDF

68.8 KB Created: 2020-11-05 22:40:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 79f69a7f6efd1d2d78d8f1f0e7b3ecbf SHA-1: 52980cd96ef16fd566f6241902935d6bd26451fe SHA-256: 10e031c762f2a7af4cb061227dca212547e6e113133ee141e05c0e75d740c84f
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://traffine.ru/aws?keyword=emu+proteus+2000+manual In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/ridigozes_gotilukivisabeb_femamozum_dupem.pdfIn PDF document text
    • https://fineruliji.weebly.com/uploads/1/3/4/3/134313455/4724175.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/9c619.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/bejexe/70602025694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcf419a0-fb08-48c6-81c1-c68eb23fc01b/nigerian_flag_png.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02f2ed87-b517-4fa3-9698-e23be1a70249/generate_xsd_from_xml_online.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/accounting_and_finance_for_business_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/21155673847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0709/6986/files/rorec_mud_pores_clean_cleanser_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cae45951-68cc-4104-a951-b96502c56a76/iatf_16949_audit_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3935/7604/files/72976773416.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_off0000cdf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF7 5196 bytes
SHA-256: 6c5c94bf75bf21c6bf5a4a69a4f60b1fa17559e5cf6911b0f42a29edf66340d5
font_01_sfnt_off0000df88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF88 11052 bytes
SHA-256: 8a4663e30bd36be98be8289053ad390b1487daa3c6b1bb8bc3315abc391507c5