Malicious PDF — malware analysis report

Static analysis result for SHA-256 801dc88bbce61441…

MALICIOUS

PDF

41.7 KB Created: 2020-10-31 04:43:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 712ef8963306798b632032a995eba833 SHA-1: 6e8c3bd2a49add4deea8503f8ff765d06d64f633 SHA-256: 801dc88bbce61441c82c2488cb4a106cde29824cf3a27c9cd88229326da28038
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=the+family+proclamation+printable In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408990/normal_5f94c695278a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378171/normal_5f98293d53fe2.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/zokuzodidud_bemabozerewir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376625/normal_5f8b48a51c07e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379046/normal_5f8f1f9d421b4.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/9897457.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/1/0500/3670/3385/files/xaduluniwigox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/2908/3293/files/a_daughters_prayer_for_her_dying_mother.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/nuropikagalakenizefon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2331/0260/files/50365978723.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36f2d7a6-bc0d-4697-8425-5e820a4ea77a/35071989716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0629/4178/files/cch_copy_1_trang.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95c0ba8b-2a70-4ad0-8e53-6cbc286f81a4/wirebir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2896/9158/files/41436149378.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/rupabozo.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_off00006528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6528 5268 bytes
SHA-256: 140f0e8f851ecce3cf9e61205144637e99e3d03500112a0a23ba8d82f28937ef
font_01_sfnt_off000076ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76EE 10136 bytes
SHA-256: 7df0f40ac3784bde4ac317c964d56d8f61a047ea8d55c39f1d992c828a05895e