Malicious PDF — malware analysis report

Static analysis result for SHA-256 d253b93bc71100ab…

MALICIOUS

PDF

43.4 KB Created: 2020-11-03 09:25:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 95f71a4ed0b99513e89cd1b1be31ae8a SHA-1: e7457af0c1d48fa7cb0790dadca8226b2527f353 SHA-256: d253b93bc71100abdcc5ce18cfa2ec460421788c772047d6eef1f12908bf8387
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.me/123?keyword=damsel+fish+care In PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/padafudutite.pdfIn PDF document text
    • https://keruzexutebimoz.weebly.com/uploads/1/3/4/3/134310977/bezir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7702/files/jbl_flip_1_charger.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/comtrend_ar_5381u_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/safipezuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/9799/4418/files/kaze_to_ki_no_uta_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/archer_guide_bars.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/tovibijexalokipo.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/prozac_nation_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/paxupam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/merge_images_in_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1858/2688/files/english_to_mexican_slang.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000609c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609C 4612 bytes
SHA-256: 7f97811c8668a31b548470a8516157b4b202cdb3c5c81120d63342bd4dc8909f
font_01_sfnt_off00007038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7038 10300 bytes
SHA-256: d3785dac8f21f2992023f8558430abe3fb9eef9c94a5b7dc212e83da4e3b1bb8
font_02_sfnt_off00009323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9323 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3