Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc84afbf615957d9…

MALICIOUS

PDF

38.3 KB Created: 2020-10-12 11:16:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 74f324d19955511c67655ad1dc2eed25 SHA-1: ea1a5593fbc48b284e3e8a8e2a9b66beaee9d3bc SHA-256: cc84afbf615957d97670a8c2c16c86aab94850f4b7da83195427ec38e4c4dac4
132 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/pify?keyword=ielts+reading+practice+exam+pdf In PDF document text
    • https://site-1038627.mozfiles.com/files/1038627/doraxi.pdfIn PDF document text
    • https://site-1039689.mozfiles.com/files/1039689/patokidod.pdfIn PDF document text
    • https://site-1038567.mozfiles.com/files/1038567/25778846781.pdfIn PDF document text
    • https://site-1038988.mozfiles.com/files/1038988/24809388590.pdfIn PDF document text
    • https://site-1043246.mozfiles.com/files/1043246/wolosutukuwoxeniju.pdfIn PDF document text
    • https://site-1039449.mozfiles.com/files/1039449/23148072370.pdfIn PDF document text
    • https://site-1036886.mozfiles.com/files/1036886/revadofedewegivolelise.pdfIn PDF document text
    • http://xudifuxo.sfccg.org/uploads/1/3/0/9/130969663/d094081239a7.pdfIn PDF document text
    • http://files.tigerhillpermaculture.net/uploads/1/3/1/4/131453871/tatajev-mimugogozisaw-tenugonuguvureb.pdfIn PDF document text
    • http://files.forrestcitychamber.com/uploads/1/3/0/8/130874521/8793cdd56d6b6.pdfIn PDF document text
    • http://files.ncmawv.com/uploads/1/3/1/3/131381240/ff5d6b0f3.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/cfac81cc-4c0b-40b8-96a8-59b3a045de09/47151040566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a61c7e4-aa94-4011-a2af-b5729205c474/jesejexa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026dc753-7d3f-4c86-b9af-9ae25fa3bc30/zerob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6030f913-7562-4bc2-bbdd-e5f842b1a260/tetefel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7e17dff-0122-4d73-abdb-bfe28f2fbe82/82644038217.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C5 5480 bytes
SHA-256: dd0a892ba3284be474343729d7e8a226265deed5ef0d2eeacfb0d4873b51b4ed
font_01_sfnt_off00006a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A51 10008 bytes
SHA-256: bb454a7c507e147917ba35d2093caf5a367a388bea355d351b0a42f4355e03eb

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