Malicious PDF — malware analysis report

Static analysis result for SHA-256 3692dadc3077a859…

MALICIOUS

PDF

45.3 KB Created: 2020-10-30 01:32:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 83902544599f1357af70d51b6a7f3175 SHA-1: 70a8669e57f7c0609bb0c6774aeadbab98d9d569 SHA-256: 3692dadc3077a859adb7f9d2ca3b6b837234bdb37fd2e65e2f83dd7d1eb750c9
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=lowrance+elite+4+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377100/normal_5f8a558f37f18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_5f8f12f3ab2f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006663.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006663.bin)
    • https://uploads.strikinglycdn.com/files/5cbf589d-70a2-455b-85ea-b985a5eb9781/gezusobumivibujanu.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/historia_da_branca_de_neve_em.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/el_alquimista_libro_completo.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/identify_the_following_phases_of_mitosis._use_these_choices_telophase.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/sing_alleluia_clap_your_hands_satb.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/xisawusimami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d41d888f-5dfd-4a55-8a7c-a76b9f92bd8d/raw_silk_fabric_price.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/nekevexulevefaragonuje.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/vias_de_absorcion_de_farmacos.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_off00006663.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6663 4888 bytes
SHA-256: 1d9423e6f49e279aa7ca6606e9d7938c86cc3b16713e9aab16be68009c4aee2c
font_01_sfnt_off00007700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7700 2388 bytes
SHA-256: 579ff965bf09766ba1865a13bcee977a5d59dddb7036e1261f6555c87cf1020c
font_02_sfnt_off00008151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8151 12384 bytes
SHA-256: 6f3ceda7ba23ce9c1bfe03c09c2b246ac1ed79aa95471577f5b3590a645bc1d1