Malicious PDF — malware analysis report

Static analysis result for SHA-256 97f64c33aa9bc2a9…

MALICIOUS

PDF

40.8 KB Created: 2020-11-02 16:05:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 01d6820a96eb0c331228e03a1f188503 SHA-1: 6082b5a0b1ef88ef32d23f98a261ae5bd9079d08 SHA-256: 97f64c33aa9bc2a917ece141beb7068699727e839d01cc9e1185e313c3ecf339
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.link/pify?keyword=wow+vial+of+the+sands+recipe+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5f992ea70019f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370299/normal_5f9c7b638f20c.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/4dbef3a7-7006-4882-89cd-526efa9ad035/dekoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4668e3a-d10f-4cfd-abd5-5ebd937e1f25/lovawolezineta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f990be18-9b47-490f-afd5-6dcd24317d58/54619924161.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/nursery_and_primary_school_curriculum_in_nigeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6687/8869/files/chemetronics_micro_1-ev_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/fexugusabafozobuwofisip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/364239ce-1381-4e2b-88a4-748ce00e2688/97322939119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eec1d18-89f5-455a-99bd-2765d522c5e3/91457358714.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/hand_washing_steps_pictures.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_off0000606d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606D 5584 bytes
SHA-256: 6621db4e719b1299ad8d712e92c98ea7ef0b9def3a3aaef6fe13be6f000f9277
font_01_sfnt_off00007385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7385 10312 bytes
SHA-256: c29539022a47deb356dc34369b5ed54c17b74e87ec67b87bb7823f60efc9514f