Malicious PDF — malware analysis report

Static analysis result for SHA-256 975cd913cca6fb20…

MALICIOUS

PDF

40.0 KB Created: 2020-10-29 20:49:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 6d637ddacee5d1d00d3106fe9f828025 SHA-1: 814ca4c2942682ab76bf96e768a25ecad24ed364 SHA-256: 975cd913cca6fb2020f7b54dcf9e52f9b9fb876b994781f2c842481ce3e2f442
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.link/pify?keyword=ge+profile+arctica+refrigerator+repair+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413469/normal_5f95c1f53c9fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383302/normal_5f97c879868bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423428/normal_5f9798d16409e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412599/normal_5f99450630d70.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005e86.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005e86.bin)
    • https://cdn.shopify.com/s/files/1/0478/3190/8511/files/superficial_love_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/89875528253.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/anatomy_chart_muscles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7739/2794/files/99555530102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4246/4166/files/fonomokejeni.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/chaupai_sahib_english_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/jasuvekukanalimoradotuk.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_off00005e86.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E86 5188 bytes
SHA-256: 8edfebef48d10740ef69f07147a02309029b9e41181a4c7d249271d634a53851
font_01_sfnt_off0000701f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701F 10308 bytes
SHA-256: 65f1548dce0ee5d4588410e7588568fdca3326a18871c1528d2e3a8719821c6b