Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3911d0d17f2e0e…

MALICIOUS

PDF

47.3 KB Created: 2020-10-26 00:21:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: e9225701d65572154cb7e7675aa29aa5 SHA-1: c95a5f531094baabfbe7071257c2aa4a5246644b SHA-256: 8f3911d0d17f2e0e1987629c6b64f9333958cd9cdce6a42fc382bd1fbb68b33d
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.me/123?keyword=outline+pictures+for+coloring+pdf In PDF document text
    • https://sipasegeremiraf.weebly.com/uploads/1/3/4/4/134404187/fawiz-dubefejokedog-pabepiganafob-gusexukajo.pdfIn PDF document text
    • https://givexikiduxa.weebly.com/uploads/1/3/1/3/131398224/fijuvimurele-lipevimedawaf-romazesito.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/68318e53a.pdfIn PDF document text
    • https://jezafemobad.weebly.com/uploads/1/3/1/3/131383748/3879358.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/9f432c9681a01.pdfIn PDF document text
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/95a3305.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/d41a80ef933e7be.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1696278.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/6332dca5588470.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/5c3862a640e9f.pdfIn PDF document text
    • https://repugonajipivup.weebly.com/uploads/1/3/0/8/130814926/tetinodizoluwexu.pdfIn PDF document text
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/xixafolasosil.pdfIn PDF document text
    • https://vixeroniwemeful.weebly.com/uploads/1/3/0/7/130740086/7891164.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://s3.amazonaws.com/kavitokolezub/sociolinguistics_noun.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/fish_biryani_recipe_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/99891951991.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/eduardo_galeano_futbol.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/mastering_chemistry_chapter_13_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa831163-fd96-4bc7-b2b5-eaf4382152c6/78619396699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84d3d9c1-0718-48b4-a6b3-3a815e7740c2/sajimulipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efca5e43-05e0-41ce-bb90-a4a5fe5edbe2/88018119862.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c07836e-03a0-4cd3-9682-d35f0040e106/gudazusomuxodaroretuxemug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f174e5c5-2c91-41f6-9302-23e06d4431d0/iba_caminando_cuento.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad6114f5-8a76-4e17-9f67-96c54fb9d83c/pinuzogoropitujimer.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_off00006d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1D 5020 bytes
SHA-256: ee7d7c8d4977c51c70c9eca5848296416aafdfcfd21722d6c0ec46c12e65993f
font_01_sfnt_off00007e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3F 10400 bytes
SHA-256: d85e68537e4e95f159b4c615eef8993fc84be3200d2d7f0ca293395ae7ede11e
font_02_sfnt_off0000a161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA161 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71